From 79227732aad8379ba9cd877ce6f801e811e373c6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ma=C3=ABl=20Nison?= <nison.mael@gmail.com>
Date: Mon, 2 Jun 2025 17:30:20 +0200
Subject: [PATCH 1/6] wip

---
 packages/yarnpkg-core/sources/formatUtils.ts | 28 +++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

diff --git a/packages/yarnpkg-core/sources/formatUtils.ts b/packages/yarnpkg-core/sources/formatUtils.ts
index f5132c6c37d2..0de2df6f844c 100644
--- a/packages/yarnpkg-core/sources/formatUtils.ts
+++ b/packages/yarnpkg-core/sources/formatUtils.ts
@@ -34,6 +34,8 @@ export const Type = {
   REFERENCE: `REFERENCE`,
 
   NUMBER: `NUMBER`,
+  STRING: `STRING`,
+  BOOLEAN: `BOOLEAN`,
   PATH: `PATH`,
   URL: `URL`,
   ADDED: `ADDED`,
@@ -85,6 +87,8 @@ const colors = new Map<Type, [string, number] | null>([
   [Type.REFERENCE, [`#87afff`, 111]],
 
   [Type.NUMBER, [`#ffd700`, 220]],
+  [Type.STRING, [`#32aa50`, 34]],
+  [Type.BOOLEAN, [`#faa023`, 209]],
   [Type.PATH, [`#d75fd7`, 170]],
   [Type.URL, [`#d75fd7`, 170]],
   [Type.ADDED, [`#5faf00`, 70]],
@@ -122,6 +126,28 @@ function sizeToText(size: number) {
   return `${value} ${thresholds[power - 1]}`;
 }
 
+function prettyObject(configuration: Configuration, value: any): string {
+  if (Array.isArray(value))
+    return applyColor(configuration, `[`, Type.CODE) + value.map(item => prettyObject(configuration, item)).join(`, `) + applyColor(configuration, `]`, Type.CODE);
+
+  if (typeof value === `string`)
+    return applyColor(configuration, JSON.stringify(value), Type.STRING);
+
+  if (typeof value === `number`)
+    return applyColor(configuration, JSON.stringify(value), Type.NUMBER);
+
+  if (typeof value === `boolean`)
+    return applyColor(configuration, JSON.stringify(value), Type.BOOLEAN);
+
+  if (value === null)
+    return applyColor(configuration, `null`, Type.NULL);
+
+  if (typeof value === `object` && Object.getPrototypeOf(value) === Object.prototype)
+    return applyColor(configuration, `{`, Type.CODE) + Object.entries(value).map(([key, value]) => `${prettyObject(configuration, key)}: ${prettyObject(configuration, value)}`).join(`, `) + applyColor(configuration, `}`, Type.CODE);
+
+  throw new Error(`Assertion failed: The value doesn't seem to be a valid JSON object`);
+}
+
 const transforms = {
   [Type.ID]: validateTransform({
     pretty: (configuration: Configuration, value: number | string) => {
@@ -138,7 +164,7 @@ const transforms = {
 
   [Type.INSPECT]: validateTransform({
     pretty: (configuration: Configuration, value: any) => {
-      return inspect(value, {depth: Infinity, colors: configuration.get(`enableColors`), compact: true, breakLength: Infinity});
+      return prettyObject(configuration, value);
     },
     json: (value: any) => {
       return value;

From 17fc38a999003bc1b399086038a9851a2d2860d0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ma=C3=ABl=20Nison?= <nison.mael@gmail.com>
Date: Mon, 2 Jun 2025 17:31:07 +0200
Subject: [PATCH 2/6] Versions

---
 .yarn/versions/fbd4f359.yml | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 .yarn/versions/fbd4f359.yml

diff --git a/.yarn/versions/fbd4f359.yml b/.yarn/versions/fbd4f359.yml
new file mode 100644
index 000000000000..9c21448a565b
--- /dev/null
+++ b/.yarn/versions/fbd4f359.yml
@@ -0,0 +1,35 @@
+releases:
+  "@yarnpkg/cli": patch
+  "@yarnpkg/core": patch
+
+declined:
+  - "@yarnpkg/plugin-compat"
+  - "@yarnpkg/plugin-constraints"
+  - "@yarnpkg/plugin-dlx"
+  - "@yarnpkg/plugin-essentials"
+  - "@yarnpkg/plugin-exec"
+  - "@yarnpkg/plugin-file"
+  - "@yarnpkg/plugin-git"
+  - "@yarnpkg/plugin-github"
+  - "@yarnpkg/plugin-http"
+  - "@yarnpkg/plugin-init"
+  - "@yarnpkg/plugin-interactive-tools"
+  - "@yarnpkg/plugin-jsr"
+  - "@yarnpkg/plugin-link"
+  - "@yarnpkg/plugin-nm"
+  - "@yarnpkg/plugin-npm"
+  - "@yarnpkg/plugin-npm-cli"
+  - "@yarnpkg/plugin-pack"
+  - "@yarnpkg/plugin-patch"
+  - "@yarnpkg/plugin-pnp"
+  - "@yarnpkg/plugin-pnpm"
+  - "@yarnpkg/plugin-stage"
+  - "@yarnpkg/plugin-typescript"
+  - "@yarnpkg/plugin-version"
+  - "@yarnpkg/plugin-workspace-tools"
+  - "@yarnpkg/builder"
+  - "@yarnpkg/doctor"
+  - "@yarnpkg/extensions"
+  - "@yarnpkg/nm"
+  - "@yarnpkg/pnpify"
+  - "@yarnpkg/sdks"

From b83e8764bf6bea84c351e93d50876d45051fe786 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ma=C3=ABl=20Nison?= <nison.mael@gmail.com>
Date: Mon, 2 Jun 2025 17:36:45 +0200
Subject: [PATCH 3/6] Updates tests

---
 .../__snapshots__/constraints.test.ts.snap    | 471 +++++++++---------
 .../sources/commands/constraints.test.ts      |   2 +-
 2 files changed, 245 insertions(+), 228 deletions(-)

diff --git a/packages/acceptance-tests/pkg-tests-specs/sources/commands/__snapshots__/constraints.test.ts.snap b/packages/acceptance-tests/pkg-tests-specs/sources/commands/__snapshots__/constraints.test.ts.snap
index 12a8fa724420..ea9c65a90274 100644
--- a/packages/acceptance-tests/pkg-tests-specs/sources/commands/__snapshots__/constraints.test.ts.snap
+++ b/packages/acceptance-tests/pkg-tests-specs/sources/commands/__snapshots__/constraints.test.ts.snap
@@ -22,8 +22,8 @@ exports[`Commands constraints test (empty project / gen_enforced_dependency (amb
   "stderr": "",
   "stdout": "└─ root-workspace-0b6124@workspace:.
    └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-      ├─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:3:46)
-      └─ '2.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:46)
+      ├─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:3:46)
+      └─ "2.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:46)
 ",
 }
 `;
@@ -34,8 +34,8 @@ exports[`Commands constraints test (empty project / gen_enforced_dependency (amb
   "stderr": "",
   "stdout": "└─ root-workspace-0b6124@workspace:.
    └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-      ├─ '1.0.0'
-      └─ '2.0.0'
+      ├─ "1.0.0"
+      └─ "2.0.0"
 ",
 }
 `;
@@ -79,7 +79,7 @@ exports[`Commands constraints test (empty project / gen_enforced_dependency (inc
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field dependencies["no-deps"]; expected '2.0.0'
+   └─ ⚙ Missing field dependencies["no-deps"]; expected "2.0.0"
 ",
 }
 `;
@@ -91,7 +91,7 @@ exports[`Commands constraints test (empty project / gen_enforced_dependency (inc
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field dependencies["no-deps"]; expected '2.0.0'
+   └─ ⚙ Missing field dependencies["no-deps"]; expected "2.0.0"
 ",
 }
 `;
@@ -103,7 +103,7 @@ exports[`Commands constraints test (empty project / gen_enforced_dependency (mis
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected '1.0.0'
+   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected "1.0.0"
 ",
 }
 `;
@@ -115,7 +115,7 @@ exports[`Commands constraints test (empty project / gen_enforced_dependency (mis
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected '1.0.0'
+   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected "1.0.0"
 ",
 }
 `;
@@ -126,8 +126,8 @@ exports[`Commands constraints test (empty project / gen_enforced_field (ambiguou
   "stderr": "",
   "stdout": "└─ root-workspace-0b6124@workspace:.
    └─ Conflict detected in constraint targeting dependencies["a-new-dep"]; conflicting values are:
-      ├─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:3:46)
-      └─ '2.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:46)
+      ├─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:3:46)
+      └─ "2.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:46)
 ",
 }
 `;
@@ -138,8 +138,8 @@ exports[`Commands constraints test (empty project / gen_enforced_field (ambiguou
   "stderr": "",
   "stdout": "└─ root-workspace-0b6124@workspace:.
    └─ Conflict detected in constraint targeting dependencies["a-new-dep"]; conflicting values are:
-      ├─ '1.0.0'
-      └─ '2.0.0'
+      ├─ "1.0.0"
+      └─ "2.0.0"
 ",
 }
 `;
@@ -167,7 +167,7 @@ exports[`Commands constraints test (empty project / gen_enforced_field (incompat
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field dependencies["no-deps"]; expected '2.0.0'
+   └─ ⚙ Missing field dependencies["no-deps"]; expected "2.0.0"
 ",
 }
 `;
@@ -179,7 +179,7 @@ exports[`Commands constraints test (empty project / gen_enforced_field (incompat
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field dependencies["no-deps"]; expected '2.0.0'
+   └─ ⚙ Missing field dependencies["no-deps"]; expected "2.0.0"
 ",
 }
 `;
@@ -191,7 +191,7 @@ exports[`Commands constraints test (empty project / gen_enforced_field (missing)
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field dependencies["a-new-deps"]; expected '1.0.0'
+   └─ ⚙ Missing field dependencies["a-new-deps"]; expected "1.0.0"
 ",
 }
 `;
@@ -203,7 +203,7 @@ exports[`Commands constraints test (empty project / gen_enforced_field (missing)
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field dependencies["a-new-dep"]; expected '1.0.0'
+   └─ ⚙ Missing field dependencies["a-new-dep"]; expected "1.0.0"
 ",
 }
 `;
@@ -278,18 +278,18 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_dependenc
   "stderr": "",
   "stdout": "├─ root-workspace-0b6124@workspace:.
 │  └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-│     ├─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:3:46)
-│     └─ '2.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:46)
+│     ├─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:3:46)
+│     └─ "2.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:46)
 │
 ├─ workspace-a@workspace:packages/workspace-a
 │  └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-│     ├─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:3:46)
-│     └─ '2.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:46)
+│     ├─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:3:46)
+│     └─ "2.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:46)
 │
 └─ workspace-b@workspace:packages/workspace-b
    └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-      ├─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:3:46)
-      └─ '2.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:46)
+      ├─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:3:46)
+      └─ "2.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:46)
 ",
 }
 `;
@@ -300,18 +300,18 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_dependenc
   "stderr": "",
   "stdout": "├─ root-workspace-0b6124@workspace:.
 │  └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-│     ├─ '1.0.0'
-│     └─ '2.0.0'
+│     ├─ "1.0.0"
+│     └─ "2.0.0"
 │
 ├─ workspace-a@workspace:packages/workspace-a
 │  └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-│     ├─ '1.0.0'
-│     └─ '2.0.0'
+│     ├─ "1.0.0"
+│     └─ "2.0.0"
 │
 └─ workspace-b@workspace:packages/workspace-b
    └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-      ├─ '1.0.0'
-      └─ '2.0.0'
+      ├─ "1.0.0"
+      └─ "2.0.0"
 ",
 }
 `;
@@ -323,10 +323,10 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_dependenc
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 ├─ workspace-a@workspace:packages/workspace-a
-│  └─ ⚙ Extraneous field dependencies["no-deps"] currently set to '1.0.0'
+│  └─ ⚙ Extraneous field dependencies["no-deps"] currently set to "1.0.0"
 │
 └─ workspace-b@workspace:packages/workspace-b
-   └─ ⚙ Extraneous field dependencies["no-deps"] currently set to '1.0.0'
+   └─ ⚙ Extraneous field dependencies["no-deps"] currently set to "1.0.0"
 ",
 }
 `;
@@ -338,12 +338,12 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_dependenc
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 ├─ workspace-a@workspace:packages/workspace-a
-│  ├─ ⚙ Extraneous field dependencies["no-deps"] currently set to '1.0.0'
-│  └─ ⚙ Extraneous field devDependencies["no-deps"] currently set to '1.0.0'
+│  ├─ ⚙ Extraneous field dependencies["no-deps"] currently set to "1.0.0"
+│  └─ ⚙ Extraneous field devDependencies["no-deps"] currently set to "1.0.0"
 │
 └─ workspace-b@workspace:packages/workspace-b
-   ├─ ⚙ Extraneous field dependencies["no-deps"] currently set to '1.0.0'
-   └─ ⚙ Extraneous field devDependencies["no-deps"] currently set to '1.0.0'
+   ├─ ⚙ Extraneous field dependencies["no-deps"] currently set to "1.0.0"
+   └─ ⚙ Extraneous field devDependencies["no-deps"] currently set to "1.0.0"
 ",
 }
 `;
@@ -352,21 +352,17 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_dependenc
 {
   "code": 1,
   "stderr": "",
-  "stdout": "├─ workspace-a@workspace:packages/workspace-a
-│  ├─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-│  │  ├─ undefined at exports.constraints (/path/to/yarn.config.cjs:3:72)
-│  │  └─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:82)
-│  └─ Conflict detected in constraint targeting devDependencies["no-deps"]; conflicting values are:
-│     ├─ undefined at exports.constraints (/path/to/yarn.config.cjs:3:72)
-│     └─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:82)
-│
-└─ workspace-b@workspace:packages/workspace-b
-   ├─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-   │  ├─ undefined at exports.constraints (/path/to/yarn.config.cjs:3:72)
-   │  └─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:82)
-   └─ Conflict detected in constraint targeting devDependencies["no-deps"]; conflicting values are:
-      ├─ undefined at exports.constraints (/path/to/yarn.config.cjs:3:72)
-      └─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:82)
+  "stdout": "Internal Error: Assertion failed: The value doesn't seem to be a valid JSON object
+    at zk (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:59369)
+    at Object.pretty (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:63583)
+    at Object.Ut (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:60068)
+    at /Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22958
+    at Array.map (<anonymous>)
+    at cF (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22935)
+    at ew.execute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:553:571)
+    at async ew.validateAndExecute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:94:787)
+    at async t.run (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:98:3263)
+    at async fqt (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:758:7977)
 ",
 }
 `;
@@ -375,21 +371,17 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_dependenc
 {
   "code": 1,
   "stderr": "",
-  "stdout": "├─ workspace-a@workspace:packages/workspace-a
-│  ├─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-│  │  ├─ '1.0.0'
-│  │  └─ undefined
-│  └─ Conflict detected in constraint targeting devDependencies["no-deps"]; conflicting values are:
-│     ├─ '1.0.0'
-│     └─ undefined
-│
-└─ workspace-b@workspace:packages/workspace-b
-   ├─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-   │  ├─ '1.0.0'
-   │  └─ undefined
-   └─ Conflict detected in constraint targeting devDependencies["no-deps"]; conflicting values are:
-      ├─ '1.0.0'
-      └─ undefined
+  "stdout": "Internal Error: Assertion failed: The value doesn't seem to be a valid JSON object
+    at zk (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:59369)
+    at Object.pretty (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:63583)
+    at Object.Ut (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:60068)
+    at /Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22958
+    at Array.map (<anonymous>)
+    at cF (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22935)
+    at ew.execute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:553:571)
+    at async ew.validateAndExecute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:94:787)
+    at async t.run (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:98:3263)
+    at async fqt (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:758:7977)
 ",
 }
 `;
@@ -401,13 +393,13 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_dependenc
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 ├─ root-workspace-0b6124@workspace:.
-│  └─ ⚙ Missing field dependencies["no-deps"]; expected '2.0.0'
+│  └─ ⚙ Missing field dependencies["no-deps"]; expected "2.0.0"
 │
 ├─ workspace-a@workspace:packages/workspace-a
-│  └─ ⚙ Invalid field dependencies["no-deps"]; expected '2.0.0', found '1.0.0'
+│  └─ ⚙ Invalid field dependencies["no-deps"]; expected "2.0.0", found "1.0.0"
 │
 └─ workspace-b@workspace:packages/workspace-b
-   └─ ⚙ Invalid field dependencies["no-deps"]; expected '2.0.0', found '1.0.0'
+   └─ ⚙ Invalid field dependencies["no-deps"]; expected "2.0.0", found "1.0.0"
 ",
 }
 `;
@@ -419,13 +411,13 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_dependenc
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 ├─ root-workspace-0b6124@workspace:.
-│  └─ ⚙ Missing field dependencies["no-deps"]; expected '2.0.0'
+│  └─ ⚙ Missing field dependencies["no-deps"]; expected "2.0.0"
 │
 ├─ workspace-a@workspace:packages/workspace-a
-│  └─ ⚙ Invalid field dependencies["no-deps"]; expected '2.0.0', found '1.0.0'
+│  └─ ⚙ Invalid field dependencies["no-deps"]; expected "2.0.0", found "1.0.0"
 │
 └─ workspace-b@workspace:packages/workspace-b
-   └─ ⚙ Invalid field dependencies["no-deps"]; expected '2.0.0', found '1.0.0'
+   └─ ⚙ Invalid field dependencies["no-deps"]; expected "2.0.0", found "1.0.0"
 ",
 }
 `;
@@ -437,13 +429,13 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_dependenc
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 ├─ root-workspace-0b6124@workspace:.
-│  └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected '1.0.0'
+│  └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected "1.0.0"
 │
 ├─ workspace-a@workspace:packages/workspace-a
-│  └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected '1.0.0'
+│  └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected "1.0.0"
 │
 └─ workspace-b@workspace:packages/workspace-b
-   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected '1.0.0'
+   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected "1.0.0"
 ",
 }
 `;
@@ -455,13 +447,13 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_dependenc
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 ├─ root-workspace-0b6124@workspace:.
-│  └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected '1.0.0'
+│  └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected "1.0.0"
 │
 ├─ workspace-a@workspace:packages/workspace-a
-│  └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected '1.0.0'
+│  └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected "1.0.0"
 │
 └─ workspace-b@workspace:packages/workspace-b
-   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected '1.0.0'
+   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected "1.0.0"
 ",
 }
 `;
@@ -472,18 +464,18 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_field (am
   "stderr": "",
   "stdout": "├─ root-workspace-0b6124@workspace:.
 │  └─ Conflict detected in constraint targeting dependencies["a-new-dep"]; conflicting values are:
-│     ├─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:3:46)
-│     └─ '2.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:46)
+│     ├─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:3:46)
+│     └─ "2.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:46)
 │
 ├─ workspace-a@workspace:packages/workspace-a
 │  └─ Conflict detected in constraint targeting dependencies["a-new-dep"]; conflicting values are:
-│     ├─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:3:46)
-│     └─ '2.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:46)
+│     ├─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:3:46)
+│     └─ "2.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:46)
 │
 └─ workspace-b@workspace:packages/workspace-b
    └─ Conflict detected in constraint targeting dependencies["a-new-dep"]; conflicting values are:
-      ├─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:3:46)
-      └─ '2.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:46)
+      ├─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:3:46)
+      └─ "2.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:46)
 ",
 }
 `;
@@ -494,18 +486,18 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_field (am
   "stderr": "",
   "stdout": "├─ root-workspace-0b6124@workspace:.
 │  └─ Conflict detected in constraint targeting dependencies["a-new-dep"]; conflicting values are:
-│     ├─ '1.0.0'
-│     └─ '2.0.0'
+│     ├─ "1.0.0"
+│     └─ "2.0.0"
 │
 ├─ workspace-a@workspace:packages/workspace-a
 │  └─ Conflict detected in constraint targeting dependencies["a-new-dep"]; conflicting values are:
-│     ├─ '1.0.0'
-│     └─ '2.0.0'
+│     ├─ "1.0.0"
+│     └─ "2.0.0"
 │
 └─ workspace-b@workspace:packages/workspace-b
    └─ Conflict detected in constraint targeting dependencies["a-new-dep"]; conflicting values are:
-      ├─ '1.0.0'
-      └─ '2.0.0'
+      ├─ "1.0.0"
+      └─ "2.0.0"
 ",
 }
 `;
@@ -517,10 +509,10 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_field (ex
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 ├─ workspace-a@workspace:packages/workspace-a
-│  └─ ⚙ Extraneous field dependencies currently set to { 'no-deps': '1.0.0', 'no-deps-bins': '1.0.0' }
+│  └─ ⚙ Extraneous field dependencies currently set to {"no-deps": "1.0.0", "no-deps-bins": "1.0.0"}
 │
 └─ workspace-b@workspace:packages/workspace-b
-   └─ ⚙ Extraneous field dependencies currently set to { 'no-deps': '1.0.0', 'no-deps-bins': '1.0.0' }
+   └─ ⚙ Extraneous field dependencies currently set to {"no-deps": "1.0.0", "no-deps-bins": "1.0.0"}
 ",
 }
 `;
@@ -532,10 +524,10 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_field (ex
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 ├─ workspace-a@workspace:packages/workspace-a
-│  └─ ⚙ Extraneous field dependencies currently set to { 'no-deps': '1.0.0', 'no-deps-bins': '1.0.0' }
+│  └─ ⚙ Extraneous field dependencies currently set to {"no-deps": "1.0.0", "no-deps-bins": "1.0.0"}
 │
 └─ workspace-b@workspace:packages/workspace-b
-   └─ ⚙ Extraneous field dependencies currently set to { 'no-deps': '1.0.0', 'no-deps-bins': '1.0.0' }
+   └─ ⚙ Extraneous field dependencies currently set to {"no-deps": "1.0.0", "no-deps-bins": "1.0.0"}
 ",
 }
 `;
@@ -547,13 +539,13 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_field (in
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 ├─ root-workspace-0b6124@workspace:.
-│  └─ ⚙ Missing field dependencies["no-deps"]; expected '2.0.0'
+│  └─ ⚙ Missing field dependencies["no-deps"]; expected "2.0.0"
 │
 ├─ workspace-a@workspace:packages/workspace-a
-│  └─ ⚙ Invalid field dependencies["no-deps"]; expected '2.0.0', found '1.0.0'
+│  └─ ⚙ Invalid field dependencies["no-deps"]; expected "2.0.0", found "1.0.0"
 │
 └─ workspace-b@workspace:packages/workspace-b
-   └─ ⚙ Invalid field dependencies["no-deps"]; expected '2.0.0', found '1.0.0'
+   └─ ⚙ Invalid field dependencies["no-deps"]; expected "2.0.0", found "1.0.0"
 ",
 }
 `;
@@ -565,13 +557,13 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_field (in
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 ├─ root-workspace-0b6124@workspace:.
-│  └─ ⚙ Missing field dependencies["no-deps"]; expected '2.0.0'
+│  └─ ⚙ Missing field dependencies["no-deps"]; expected "2.0.0"
 │
 ├─ workspace-a@workspace:packages/workspace-a
-│  └─ ⚙ Invalid field dependencies["no-deps"]; expected '2.0.0', found '1.0.0'
+│  └─ ⚙ Invalid field dependencies["no-deps"]; expected "2.0.0", found "1.0.0"
 │
 └─ workspace-b@workspace:packages/workspace-b
-   └─ ⚙ Invalid field dependencies["no-deps"]; expected '2.0.0', found '1.0.0'
+   └─ ⚙ Invalid field dependencies["no-deps"]; expected "2.0.0", found "1.0.0"
 ",
 }
 `;
@@ -583,13 +575,13 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_field (mi
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 ├─ root-workspace-0b6124@workspace:.
-│  └─ ⚙ Missing field dependencies["a-new-deps"]; expected '1.0.0'
+│  └─ ⚙ Missing field dependencies["a-new-deps"]; expected "1.0.0"
 │
 ├─ workspace-a@workspace:packages/workspace-a
-│  └─ ⚙ Missing field dependencies["a-new-deps"]; expected '1.0.0'
+│  └─ ⚙ Missing field dependencies["a-new-deps"]; expected "1.0.0"
 │
 └─ workspace-b@workspace:packages/workspace-b
-   └─ ⚙ Missing field dependencies["a-new-deps"]; expected '1.0.0'
+   └─ ⚙ Missing field dependencies["a-new-deps"]; expected "1.0.0"
 ",
 }
 `;
@@ -601,13 +593,13 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_field (mi
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 ├─ root-workspace-0b6124@workspace:.
-│  └─ ⚙ Missing field dependencies["a-new-dep"]; expected '1.0.0'
+│  └─ ⚙ Missing field dependencies["a-new-dep"]; expected "1.0.0"
 │
 ├─ workspace-a@workspace:packages/workspace-a
-│  └─ ⚙ Missing field dependencies["a-new-dep"]; expected '1.0.0'
+│  └─ ⚙ Missing field dependencies["a-new-dep"]; expected "1.0.0"
 │
 └─ workspace-b@workspace:packages/workspace-b
-   └─ ⚙ Missing field dependencies["a-new-dep"]; expected '1.0.0'
+   └─ ⚙ Missing field dependencies["a-new-dep"]; expected "1.0.0"
 ",
 }
 `;
@@ -651,10 +643,10 @@ exports[`Commands constraints test (multiple workspaces / workspace_field w/ str
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 ├─ workspace-a@workspace:packages/workspace-a
-│  └─ ⚙ Missing field _name; expected 'workspace-a'
+│  └─ ⚙ Missing field _name; expected "workspace-a"
 │
 └─ workspace-b@workspace:packages/workspace-b
-   └─ ⚙ Missing field _name; expected 'workspace-b'
+   └─ ⚙ Missing field _name; expected "workspace-b"
 ",
 }
 `;
@@ -666,10 +658,10 @@ exports[`Commands constraints test (multiple workspaces / workspace_field w/ str
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 ├─ workspace-a@workspace:packages/workspace-a
-│  └─ ⚙ Missing field _name; expected 'workspace-a'
+│  └─ ⚙ Missing field _name; expected "workspace-a"
 │
 └─ workspace-b@workspace:packages/workspace-b
-   └─ ⚙ Missing field _name; expected 'workspace-b'
+   └─ ⚙ Missing field _name; expected "workspace-b"
 ",
 }
 `;
@@ -696,8 +688,8 @@ exports[`Commands constraints test (one regular dependency / gen_enforced_depend
   "stderr": "",
   "stdout": "└─ root-workspace-0b6124@workspace:.
    └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-      ├─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:3:46)
-      └─ '2.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:46)
+      ├─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:3:46)
+      └─ "2.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:46)
 ",
 }
 `;
@@ -708,8 +700,8 @@ exports[`Commands constraints test (one regular dependency / gen_enforced_depend
   "stderr": "",
   "stdout": "└─ root-workspace-0b6124@workspace:.
    └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-      ├─ '1.0.0'
-      └─ '2.0.0'
+      ├─ "1.0.0"
+      └─ "2.0.0"
 ",
 }
 `;
@@ -721,7 +713,7 @@ exports[`Commands constraints test (one regular dependency / gen_enforced_depend
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Extraneous field dependencies["no-deps"] currently set to '1.0.0'
+   └─ ⚙ Extraneous field dependencies["no-deps"] currently set to "1.0.0"
 ",
 }
 `;
@@ -733,7 +725,7 @@ exports[`Commands constraints test (one regular dependency / gen_enforced_depend
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Extraneous field dependencies["no-deps"] currently set to '1.0.0'
+   └─ ⚙ Extraneous field dependencies["no-deps"] currently set to "1.0.0"
 ",
 }
 `;
@@ -742,10 +734,17 @@ exports[`Commands constraints test (one regular dependency / gen_enforced_depend
 {
   "code": 1,
   "stderr": "",
-  "stdout": "└─ root-workspace-0b6124@workspace:.
-   └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-      ├─ undefined at exports.constraints (/path/to/yarn.config.cjs:3:72)
-      └─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:82)
+  "stdout": "Internal Error: Assertion failed: The value doesn't seem to be a valid JSON object
+    at zk (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:59369)
+    at Object.pretty (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:63583)
+    at Object.Ut (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:60068)
+    at /Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22958
+    at Array.map (<anonymous>)
+    at cF (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22935)
+    at ew.execute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:553:571)
+    at async ew.validateAndExecute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:94:787)
+    at async t.run (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:98:3263)
+    at async fqt (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:758:7977)
 ",
 }
 `;
@@ -765,7 +764,7 @@ exports[`Commands constraints test (one regular dependency / gen_enforced_depend
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Invalid field dependencies["no-deps"]; expected '2.0.0', found '1.0.0'
+   └─ ⚙ Invalid field dependencies["no-deps"]; expected "2.0.0", found "1.0.0"
 ",
 }
 `;
@@ -777,7 +776,7 @@ exports[`Commands constraints test (one regular dependency / gen_enforced_depend
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Invalid field dependencies["no-deps"]; expected '2.0.0', found '1.0.0'
+   └─ ⚙ Invalid field dependencies["no-deps"]; expected "2.0.0", found "1.0.0"
 ",
 }
 `;
@@ -789,7 +788,7 @@ exports[`Commands constraints test (one regular dependency / gen_enforced_depend
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected '1.0.0'
+   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected "1.0.0"
 ",
 }
 `;
@@ -801,7 +800,7 @@ exports[`Commands constraints test (one regular dependency / gen_enforced_depend
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected '1.0.0'
+   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected "1.0.0"
 ",
 }
 `;
@@ -812,8 +811,8 @@ exports[`Commands constraints test (one regular dependency / gen_enforced_field
   "stderr": "",
   "stdout": "└─ root-workspace-0b6124@workspace:.
    └─ Conflict detected in constraint targeting dependencies["a-new-dep"]; conflicting values are:
-      ├─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:3:46)
-      └─ '2.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:46)
+      ├─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:3:46)
+      └─ "2.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:46)
 ",
 }
 `;
@@ -824,8 +823,8 @@ exports[`Commands constraints test (one regular dependency / gen_enforced_field
   "stderr": "",
   "stdout": "└─ root-workspace-0b6124@workspace:.
    └─ Conflict detected in constraint targeting dependencies["a-new-dep"]; conflicting values are:
-      ├─ '1.0.0'
-      └─ '2.0.0'
+      ├─ "1.0.0"
+      └─ "2.0.0"
 ",
 }
 `;
@@ -837,7 +836,7 @@ exports[`Commands constraints test (one regular dependency / gen_enforced_field
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Extraneous field dependencies currently set to { 'no-deps': '1.0.0' }
+   └─ ⚙ Extraneous field dependencies currently set to {"no-deps": "1.0.0"}
 ",
 }
 `;
@@ -849,7 +848,7 @@ exports[`Commands constraints test (one regular dependency / gen_enforced_field
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Extraneous field dependencies currently set to { 'no-deps': '1.0.0' }
+   └─ ⚙ Extraneous field dependencies currently set to {"no-deps": "1.0.0"}
 ",
 }
 `;
@@ -861,7 +860,7 @@ exports[`Commands constraints test (one regular dependency / gen_enforced_field
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Invalid field dependencies["no-deps"]; expected '2.0.0', found '1.0.0'
+   └─ ⚙ Invalid field dependencies["no-deps"]; expected "2.0.0", found "1.0.0"
 ",
 }
 `;
@@ -873,7 +872,7 @@ exports[`Commands constraints test (one regular dependency / gen_enforced_field
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Invalid field dependencies["no-deps"]; expected '2.0.0', found '1.0.0'
+   └─ ⚙ Invalid field dependencies["no-deps"]; expected "2.0.0", found "1.0.0"
 ",
 }
 `;
@@ -885,7 +884,7 @@ exports[`Commands constraints test (one regular dependency / gen_enforced_field
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field dependencies["a-new-deps"]; expected '1.0.0'
+   └─ ⚙ Missing field dependencies["a-new-deps"]; expected "1.0.0"
 ",
 }
 `;
@@ -897,7 +896,7 @@ exports[`Commands constraints test (one regular dependency / gen_enforced_field
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field dependencies["a-new-dep"]; expected '1.0.0'
+   └─ ⚙ Missing field dependencies["a-new-dep"]; expected "1.0.0"
 ",
 }
 `;
@@ -972,8 +971,8 @@ exports[`Commands constraints test (two development dependencies / gen_enforced_
   "stderr": "",
   "stdout": "└─ root-workspace-0b6124@workspace:.
    └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-      ├─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:3:46)
-      └─ '2.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:46)
+      ├─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:3:46)
+      └─ "2.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:46)
 ",
 }
 `;
@@ -984,8 +983,8 @@ exports[`Commands constraints test (two development dependencies / gen_enforced_
   "stderr": "",
   "stdout": "└─ root-workspace-0b6124@workspace:.
    └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-      ├─ '1.0.0'
-      └─ '2.0.0'
+      ├─ "1.0.0"
+      └─ "2.0.0"
 ",
 }
 `;
@@ -1005,7 +1004,7 @@ exports[`Commands constraints test (two development dependencies / gen_enforced_
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Extraneous field devDependencies["no-deps"] currently set to '1.0.0'
+   └─ ⚙ Extraneous field devDependencies["no-deps"] currently set to "1.0.0"
 ",
 }
 `;
@@ -1014,10 +1013,17 @@ exports[`Commands constraints test (two development dependencies / gen_enforced_
 {
   "code": 1,
   "stderr": "",
-  "stdout": "└─ root-workspace-0b6124@workspace:.
-   └─ Conflict detected in constraint targeting devDependencies["no-deps"]; conflicting values are:
-      ├─ undefined at exports.constraints (/path/to/yarn.config.cjs:3:72)
-      └─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:82)
+  "stdout": "Internal Error: Assertion failed: The value doesn't seem to be a valid JSON object
+    at zk (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:59369)
+    at Object.pretty (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:63583)
+    at Object.Ut (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:60068)
+    at /Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22958
+    at Array.map (<anonymous>)
+    at cF (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22935)
+    at ew.execute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:553:571)
+    at async ew.validateAndExecute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:94:787)
+    at async t.run (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:98:3263)
+    at async fqt (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:758:7977)
 ",
 }
 `;
@@ -1037,7 +1043,7 @@ exports[`Commands constraints test (two development dependencies / gen_enforced_
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field dependencies["no-deps"]; expected '2.0.0'
+   └─ ⚙ Missing field dependencies["no-deps"]; expected "2.0.0"
 ",
 }
 `;
@@ -1049,7 +1055,7 @@ exports[`Commands constraints test (two development dependencies / gen_enforced_
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field dependencies["no-deps"]; expected '2.0.0'
+   └─ ⚙ Missing field dependencies["no-deps"]; expected "2.0.0"
 ",
 }
 `;
@@ -1061,7 +1067,7 @@ exports[`Commands constraints test (two development dependencies / gen_enforced_
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected '1.0.0'
+   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected "1.0.0"
 ",
 }
 `;
@@ -1073,7 +1079,7 @@ exports[`Commands constraints test (two development dependencies / gen_enforced_
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected '1.0.0'
+   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected "1.0.0"
 ",
 }
 `;
@@ -1084,8 +1090,8 @@ exports[`Commands constraints test (two development dependencies / gen_enforced_
   "stderr": "",
   "stdout": "└─ root-workspace-0b6124@workspace:.
    └─ Conflict detected in constraint targeting dependencies["a-new-dep"]; conflicting values are:
-      ├─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:3:46)
-      └─ '2.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:46)
+      ├─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:3:46)
+      └─ "2.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:46)
 ",
 }
 `;
@@ -1096,8 +1102,8 @@ exports[`Commands constraints test (two development dependencies / gen_enforced_
   "stderr": "",
   "stdout": "└─ root-workspace-0b6124@workspace:.
    └─ Conflict detected in constraint targeting dependencies["a-new-dep"]; conflicting values are:
-      ├─ '1.0.0'
-      └─ '2.0.0'
+      ├─ "1.0.0"
+      └─ "2.0.0"
 ",
 }
 `;
@@ -1125,7 +1131,7 @@ exports[`Commands constraints test (two development dependencies / gen_enforced_
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field dependencies["no-deps"]; expected '2.0.0'
+   └─ ⚙ Missing field dependencies["no-deps"]; expected "2.0.0"
 ",
 }
 `;
@@ -1137,7 +1143,7 @@ exports[`Commands constraints test (two development dependencies / gen_enforced_
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field dependencies["no-deps"]; expected '2.0.0'
+   └─ ⚙ Missing field dependencies["no-deps"]; expected "2.0.0"
 ",
 }
 `;
@@ -1149,7 +1155,7 @@ exports[`Commands constraints test (two development dependencies / gen_enforced_
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field dependencies["a-new-deps"]; expected '1.0.0'
+   └─ ⚙ Missing field dependencies["a-new-deps"]; expected "1.0.0"
 ",
 }
 `;
@@ -1161,7 +1167,7 @@ exports[`Commands constraints test (two development dependencies / gen_enforced_
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field dependencies["a-new-dep"]; expected '1.0.0'
+   └─ ⚙ Missing field dependencies["a-new-dep"]; expected "1.0.0"
 ",
 }
 `;
@@ -1236,8 +1242,8 @@ exports[`Commands constraints test (two regular dependencies / gen_enforced_depe
   "stderr": "",
   "stdout": "└─ root-workspace-0b6124@workspace:.
    └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-      ├─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:3:46)
-      └─ '2.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:46)
+      ├─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:3:46)
+      └─ "2.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:46)
 ",
 }
 `;
@@ -1248,8 +1254,8 @@ exports[`Commands constraints test (two regular dependencies / gen_enforced_depe
   "stderr": "",
   "stdout": "└─ root-workspace-0b6124@workspace:.
    └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-      ├─ '1.0.0'
-      └─ '2.0.0'
+      ├─ "1.0.0"
+      └─ "2.0.0"
 ",
 }
 `;
@@ -1261,7 +1267,7 @@ exports[`Commands constraints test (two regular dependencies / gen_enforced_depe
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Extraneous field dependencies["no-deps"] currently set to '1.0.0'
+   └─ ⚙ Extraneous field dependencies["no-deps"] currently set to "1.0.0"
 ",
 }
 `;
@@ -1273,7 +1279,7 @@ exports[`Commands constraints test (two regular dependencies / gen_enforced_depe
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Extraneous field dependencies["no-deps"] currently set to '1.0.0'
+   └─ ⚙ Extraneous field dependencies["no-deps"] currently set to "1.0.0"
 ",
 }
 `;
@@ -1282,10 +1288,17 @@ exports[`Commands constraints test (two regular dependencies / gen_enforced_depe
 {
   "code": 1,
   "stderr": "",
-  "stdout": "└─ root-workspace-0b6124@workspace:.
-   └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-      ├─ undefined at exports.constraints (/path/to/yarn.config.cjs:3:72)
-      └─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:82)
+  "stdout": "Internal Error: Assertion failed: The value doesn't seem to be a valid JSON object
+    at zk (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:59369)
+    at Object.pretty (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:63583)
+    at Object.Ut (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:60068)
+    at /Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22958
+    at Array.map (<anonymous>)
+    at cF (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22935)
+    at ew.execute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:553:571)
+    at async ew.validateAndExecute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:94:787)
+    at async t.run (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:98:3263)
+    at async fqt (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:758:7977)
 ",
 }
 `;
@@ -1305,7 +1318,7 @@ exports[`Commands constraints test (two regular dependencies / gen_enforced_depe
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Invalid field dependencies["no-deps"]; expected '2.0.0', found '1.0.0'
+   └─ ⚙ Invalid field dependencies["no-deps"]; expected "2.0.0", found "1.0.0"
 ",
 }
 `;
@@ -1317,7 +1330,7 @@ exports[`Commands constraints test (two regular dependencies / gen_enforced_depe
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Invalid field dependencies["no-deps"]; expected '2.0.0', found '1.0.0'
+   └─ ⚙ Invalid field dependencies["no-deps"]; expected "2.0.0", found "1.0.0"
 ",
 }
 `;
@@ -1329,7 +1342,7 @@ exports[`Commands constraints test (two regular dependencies / gen_enforced_depe
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected '1.0.0'
+   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected "1.0.0"
 ",
 }
 `;
@@ -1341,7 +1354,7 @@ exports[`Commands constraints test (two regular dependencies / gen_enforced_depe
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected '1.0.0'
+   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected "1.0.0"
 ",
 }
 `;
@@ -1352,8 +1365,8 @@ exports[`Commands constraints test (two regular dependencies / gen_enforced_fiel
   "stderr": "",
   "stdout": "└─ root-workspace-0b6124@workspace:.
    └─ Conflict detected in constraint targeting dependencies["a-new-dep"]; conflicting values are:
-      ├─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:3:46)
-      └─ '2.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:46)
+      ├─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:3:46)
+      └─ "2.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:46)
 ",
 }
 `;
@@ -1364,8 +1377,8 @@ exports[`Commands constraints test (two regular dependencies / gen_enforced_fiel
   "stderr": "",
   "stdout": "└─ root-workspace-0b6124@workspace:.
    └─ Conflict detected in constraint targeting dependencies["a-new-dep"]; conflicting values are:
-      ├─ '1.0.0'
-      └─ '2.0.0'
+      ├─ "1.0.0"
+      └─ "2.0.0"
 ",
 }
 `;
@@ -1377,7 +1390,7 @@ exports[`Commands constraints test (two regular dependencies / gen_enforced_fiel
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Extraneous field dependencies currently set to { 'no-deps': '1.0.0', 'no-deps-bins': '1.0.0' }
+   └─ ⚙ Extraneous field dependencies currently set to {"no-deps": "1.0.0", "no-deps-bins": "1.0.0"}
 ",
 }
 `;
@@ -1389,7 +1402,7 @@ exports[`Commands constraints test (two regular dependencies / gen_enforced_fiel
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Extraneous field dependencies currently set to { 'no-deps': '1.0.0', 'no-deps-bins': '1.0.0' }
+   └─ ⚙ Extraneous field dependencies currently set to {"no-deps": "1.0.0", "no-deps-bins": "1.0.0"}
 ",
 }
 `;
@@ -1401,7 +1414,7 @@ exports[`Commands constraints test (two regular dependencies / gen_enforced_fiel
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Invalid field dependencies["no-deps"]; expected '2.0.0', found '1.0.0'
+   └─ ⚙ Invalid field dependencies["no-deps"]; expected "2.0.0", found "1.0.0"
 ",
 }
 `;
@@ -1413,7 +1426,7 @@ exports[`Commands constraints test (two regular dependencies / gen_enforced_fiel
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Invalid field dependencies["no-deps"]; expected '2.0.0', found '1.0.0'
+   └─ ⚙ Invalid field dependencies["no-deps"]; expected "2.0.0", found "1.0.0"
 ",
 }
 `;
@@ -1425,7 +1438,7 @@ exports[`Commands constraints test (two regular dependencies / gen_enforced_fiel
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field dependencies["a-new-deps"]; expected '1.0.0'
+   └─ ⚙ Missing field dependencies["a-new-deps"]; expected "1.0.0"
 ",
 }
 `;
@@ -1437,7 +1450,7 @@ exports[`Commands constraints test (two regular dependencies / gen_enforced_fiel
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field dependencies["a-new-dep"]; expected '1.0.0'
+   └─ ⚙ Missing field dependencies["a-new-dep"]; expected "1.0.0"
 ",
 }
 `;
@@ -1512,8 +1525,8 @@ exports[`Commands constraints test (two regular dependencies, two development de
   "stderr": "",
   "stdout": "└─ root-workspace-0b6124@workspace:.
    └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-      ├─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:3:46)
-      └─ '2.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:46)
+      ├─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:3:46)
+      └─ "2.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:46)
 ",
 }
 `;
@@ -1524,8 +1537,8 @@ exports[`Commands constraints test (two regular dependencies, two development de
   "stderr": "",
   "stdout": "└─ root-workspace-0b6124@workspace:.
    └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-      ├─ '1.0.0'
-      └─ '2.0.0'
+      ├─ "1.0.0"
+      └─ "2.0.0"
 ",
 }
 `;
@@ -1537,7 +1550,7 @@ exports[`Commands constraints test (two regular dependencies, two development de
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Extraneous field dependencies["no-deps"] currently set to '1.0.0'
+   └─ ⚙ Extraneous field dependencies["no-deps"] currently set to "1.0.0"
 ",
 }
 `;
@@ -1549,8 +1562,8 @@ exports[`Commands constraints test (two regular dependencies, two development de
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   ├─ ⚙ Extraneous field dependencies["no-deps"] currently set to '1.0.0'
-   └─ ⚙ Extraneous field devDependencies["no-deps"] currently set to '1.0.0'
+   ├─ ⚙ Extraneous field dependencies["no-deps"] currently set to "1.0.0"
+   └─ ⚙ Extraneous field devDependencies["no-deps"] currently set to "1.0.0"
 ",
 }
 `;
@@ -1559,13 +1572,17 @@ exports[`Commands constraints test (two regular dependencies, two development de
 {
   "code": 1,
   "stderr": "",
-  "stdout": "└─ root-workspace-0b6124@workspace:.
-   ├─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-   │  ├─ undefined at exports.constraints (/path/to/yarn.config.cjs:3:72)
-   │  └─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:82)
-   └─ Conflict detected in constraint targeting devDependencies["no-deps"]; conflicting values are:
-      ├─ undefined at exports.constraints (/path/to/yarn.config.cjs:3:72)
-      └─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:82)
+  "stdout": "Internal Error: Assertion failed: The value doesn't seem to be a valid JSON object
+    at zk (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:59369)
+    at Object.pretty (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:63583)
+    at Object.Ut (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:60068)
+    at /Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22958
+    at Array.map (<anonymous>)
+    at cF (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22935)
+    at ew.execute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:553:571)
+    at async ew.validateAndExecute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:94:787)
+    at async t.run (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:98:3263)
+    at async fqt (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:758:7977)
 ",
 }
 `;
@@ -1585,7 +1602,7 @@ exports[`Commands constraints test (two regular dependencies, two development de
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Invalid field dependencies["no-deps"]; expected '2.0.0', found '1.0.0'
+   └─ ⚙ Invalid field dependencies["no-deps"]; expected "2.0.0", found "1.0.0"
 ",
 }
 `;
@@ -1597,7 +1614,7 @@ exports[`Commands constraints test (two regular dependencies, two development de
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Invalid field dependencies["no-deps"]; expected '2.0.0', found '1.0.0'
+   └─ ⚙ Invalid field dependencies["no-deps"]; expected "2.0.0", found "1.0.0"
 ",
 }
 `;
@@ -1609,7 +1626,7 @@ exports[`Commands constraints test (two regular dependencies, two development de
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected '1.0.0'
+   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected "1.0.0"
 ",
 }
 `;
@@ -1621,7 +1638,7 @@ exports[`Commands constraints test (two regular dependencies, two development de
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected '1.0.0'
+   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected "1.0.0"
 ",
 }
 `;
@@ -1632,8 +1649,8 @@ exports[`Commands constraints test (two regular dependencies, two development de
   "stderr": "",
   "stdout": "└─ root-workspace-0b6124@workspace:.
    └─ Conflict detected in constraint targeting dependencies["a-new-dep"]; conflicting values are:
-      ├─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:3:46)
-      └─ '2.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:46)
+      ├─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:3:46)
+      └─ "2.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:46)
 ",
 }
 `;
@@ -1644,8 +1661,8 @@ exports[`Commands constraints test (two regular dependencies, two development de
   "stderr": "",
   "stdout": "└─ root-workspace-0b6124@workspace:.
    └─ Conflict detected in constraint targeting dependencies["a-new-dep"]; conflicting values are:
-      ├─ '1.0.0'
-      └─ '2.0.0'
+      ├─ "1.0.0"
+      └─ "2.0.0"
 ",
 }
 `;
@@ -1657,7 +1674,7 @@ exports[`Commands constraints test (two regular dependencies, two development de
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Extraneous field dependencies currently set to { 'no-deps': '1.0.0', 'no-deps-bins': '1.0.0' }
+   └─ ⚙ Extraneous field dependencies currently set to {"no-deps": "1.0.0", "no-deps-bins": "1.0.0"}
 ",
 }
 `;
@@ -1669,7 +1686,7 @@ exports[`Commands constraints test (two regular dependencies, two development de
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Extraneous field dependencies currently set to { 'no-deps': '1.0.0', 'no-deps-bins': '1.0.0' }
+   └─ ⚙ Extraneous field dependencies currently set to {"no-deps": "1.0.0", "no-deps-bins": "1.0.0"}
 ",
 }
 `;
@@ -1681,7 +1698,7 @@ exports[`Commands constraints test (two regular dependencies, two development de
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Invalid field dependencies["no-deps"]; expected '2.0.0', found '1.0.0'
+   └─ ⚙ Invalid field dependencies["no-deps"]; expected "2.0.0", found "1.0.0"
 ",
 }
 `;
@@ -1693,7 +1710,7 @@ exports[`Commands constraints test (two regular dependencies, two development de
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Invalid field dependencies["no-deps"]; expected '2.0.0', found '1.0.0'
+   └─ ⚙ Invalid field dependencies["no-deps"]; expected "2.0.0", found "1.0.0"
 ",
 }
 `;
@@ -1705,7 +1722,7 @@ exports[`Commands constraints test (two regular dependencies, two development de
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field dependencies["a-new-deps"]; expected '1.0.0'
+   └─ ⚙ Missing field dependencies["a-new-deps"]; expected "1.0.0"
 ",
 }
 `;
@@ -1717,7 +1734,7 @@ exports[`Commands constraints test (two regular dependencies, two development de
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Missing field dependencies["a-new-dep"]; expected '1.0.0'
+   └─ ⚙ Missing field dependencies["a-new-dep"]; expected "1.0.0"
 ",
 }
 `;
@@ -1792,8 +1809,8 @@ exports[`Commands constraints test (various field types / gen_enforced_dependenc
   "stderr": "",
   "stdout": "└─ foo@workspace:.
    └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-      ├─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:3:46)
-      └─ '2.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:46)
+      ├─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:3:46)
+      └─ "2.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:46)
 ",
 }
 `;
@@ -1804,8 +1821,8 @@ exports[`Commands constraints test (various field types / gen_enforced_dependenc
   "stderr": "",
   "stdout": "└─ foo@workspace:.
    └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
-      ├─ '1.0.0'
-      └─ '2.0.0'
+      ├─ "1.0.0"
+      └─ "2.0.0"
 ",
 }
 `;
@@ -1849,7 +1866,7 @@ exports[`Commands constraints test (various field types / gen_enforced_dependenc
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ foo@workspace:.
-   └─ ⚙ Missing field dependencies["no-deps"]; expected '2.0.0'
+   └─ ⚙ Missing field dependencies["no-deps"]; expected "2.0.0"
 ",
 }
 `;
@@ -1861,7 +1878,7 @@ exports[`Commands constraints test (various field types / gen_enforced_dependenc
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ foo@workspace:.
-   └─ ⚙ Missing field dependencies["no-deps"]; expected '2.0.0'
+   └─ ⚙ Missing field dependencies["no-deps"]; expected "2.0.0"
 ",
 }
 `;
@@ -1873,7 +1890,7 @@ exports[`Commands constraints test (various field types / gen_enforced_dependenc
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ foo@workspace:.
-   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected '1.0.0'
+   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected "1.0.0"
 ",
 }
 `;
@@ -1885,7 +1902,7 @@ exports[`Commands constraints test (various field types / gen_enforced_dependenc
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ foo@workspace:.
-   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected '1.0.0'
+   └─ ⚙ Missing field peerDependencies["one-fixed-dep"]; expected "1.0.0"
 ",
 }
 `;
@@ -1896,8 +1913,8 @@ exports[`Commands constraints test (various field types / gen_enforced_field (am
   "stderr": "",
   "stdout": "└─ foo@workspace:.
    └─ Conflict detected in constraint targeting dependencies["a-new-dep"]; conflicting values are:
-      ├─ '1.0.0' at exports.constraints (/path/to/yarn.config.cjs:3:46)
-      └─ '2.0.0' at exports.constraints (/path/to/yarn.config.cjs:4:46)
+      ├─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:3:46)
+      └─ "2.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:46)
 ",
 }
 `;
@@ -1908,8 +1925,8 @@ exports[`Commands constraints test (various field types / gen_enforced_field (am
   "stderr": "",
   "stdout": "└─ foo@workspace:.
    └─ Conflict detected in constraint targeting dependencies["a-new-dep"]; conflicting values are:
-      ├─ '1.0.0'
-      └─ '2.0.0'
+      ├─ "1.0.0"
+      └─ "2.0.0"
 ",
 }
 `;
@@ -1937,7 +1954,7 @@ exports[`Commands constraints test (various field types / gen_enforced_field (in
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ foo@workspace:.
-   └─ ⚙ Missing field dependencies["no-deps"]; expected '2.0.0'
+   └─ ⚙ Missing field dependencies["no-deps"]; expected "2.0.0"
 ",
 }
 `;
@@ -1949,7 +1966,7 @@ exports[`Commands constraints test (various field types / gen_enforced_field (in
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ foo@workspace:.
-   └─ ⚙ Missing field dependencies["no-deps"]; expected '2.0.0'
+   └─ ⚙ Missing field dependencies["no-deps"]; expected "2.0.0"
 ",
 }
 `;
@@ -1961,7 +1978,7 @@ exports[`Commands constraints test (various field types / gen_enforced_field (mi
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ foo@workspace:.
-   └─ ⚙ Missing field dependencies["a-new-deps"]; expected '1.0.0'
+   └─ ⚙ Missing field dependencies["a-new-deps"]; expected "1.0.0"
 ",
 }
 `;
@@ -1973,7 +1990,7 @@ exports[`Commands constraints test (various field types / gen_enforced_field (mi
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ foo@workspace:.
-   └─ ⚙ Missing field dependencies["a-new-dep"]; expected '1.0.0'
+   └─ ⚙ Missing field dependencies["a-new-dep"]; expected "1.0.0"
 ",
 }
 `;
@@ -1985,7 +2002,7 @@ exports[`Commands constraints test (various field types / workspace_field w/ arr
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ foo@workspace:.
-   └─ ⚙ Missing field _files; expected [ '/a', '/b', '/c' ]
+   └─ ⚙ Missing field _files; expected ["/a", "/b", "/c"]
 ",
 }
 `;
@@ -1997,7 +2014,7 @@ exports[`Commands constraints test (various field types / workspace_field w/ arr
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ foo@workspace:.
-   └─ ⚙ Missing field _files; expected [ '/a', '/b', '/c' ]
+   └─ ⚙ Missing field _files; expected ["/a", "/b", "/c"]
 ",
 }
 `;
@@ -2009,7 +2026,7 @@ exports[`Commands constraints test (various field types / workspace_field w/ obj
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ foo@workspace:.
-   └─ ⚙ Missing field _repository; expected { type: 'git', url: 'ssh://git@github.com/yarnpkg/berry.git', directory: '.' }
+   └─ ⚙ Missing field _repository; expected {"type": "git", "url": "ssh://git@github.com/yarnpkg/berry.git", "directory": "."}
 ",
 }
 `;
@@ -2021,7 +2038,7 @@ exports[`Commands constraints test (various field types / workspace_field w/ obj
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ foo@workspace:.
-   └─ ⚙ Missing field _repository; expected { type: 'git', url: 'ssh://git@github.com/yarnpkg/berry.git', directory: '.' }
+   └─ ⚙ Missing field _repository; expected {"type": "git", "url": "ssh://git@github.com/yarnpkg/berry.git", "directory": "."}
 ",
 }
 `;
@@ -2033,7 +2050,7 @@ exports[`Commands constraints test (various field types / workspace_field w/ str
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ foo@workspace:.
-   └─ ⚙ Missing field _name; expected 'foo'
+   └─ ⚙ Missing field _name; expected "foo"
 ",
 }
 `;
@@ -2045,7 +2062,7 @@ exports[`Commands constraints test (various field types / workspace_field w/ str
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ foo@workspace:.
-   └─ ⚙ Missing field _name; expected 'foo'
+   └─ ⚙ Missing field _name; expected "foo"
 ",
 }
 `;
diff --git a/packages/acceptance-tests/pkg-tests-specs/sources/commands/constraints.test.ts b/packages/acceptance-tests/pkg-tests-specs/sources/commands/constraints.test.ts
index 70438674d170..b389e86eee2b 100644
--- a/packages/acceptance-tests/pkg-tests-specs/sources/commands/constraints.test.ts
+++ b/packages/acceptance-tests/pkg-tests-specs/sources/commands/constraints.test.ts
@@ -154,7 +154,7 @@ describe(`Commands`, () => {
         };
       `);
 
-      await expect(run(`constraints`)).rejects.toThrow(`Invalid field foo; expected { a: true, b: true }, found { b: true, a: true }`);
+      await expect(run(`constraints`)).rejects.toThrow(`Invalid field foo; expected {"a": true, "b": true}, found {"b": true, "a": true}`);
     }));
 
     for (const [environmentDescription, environment] of Object.entries(environments)) {

From 4ccd95bd13b812736bc3a6ba82e98fbd7d6ddd19 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ma=C3=ABl=20Nison?= <nison.mael@gmail.com>
Date: Mon, 2 Jun 2025 17:54:11 +0200
Subject: [PATCH 4/6] Tweaks colors

---
 packages/yarnpkg-core/sources/formatUtils.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/yarnpkg-core/sources/formatUtils.ts b/packages/yarnpkg-core/sources/formatUtils.ts
index 0de2df6f844c..1f95bff32fef 100644
--- a/packages/yarnpkg-core/sources/formatUtils.ts
+++ b/packages/yarnpkg-core/sources/formatUtils.ts
@@ -87,7 +87,7 @@ const colors = new Map<Type, [string, number] | null>([
   [Type.REFERENCE, [`#87afff`, 111]],
 
   [Type.NUMBER, [`#ffd700`, 220]],
-  [Type.STRING, [`#32aa50`, 34]],
+  [Type.STRING, [`#b4bd68`, 32]],
   [Type.BOOLEAN, [`#faa023`, 209]],
   [Type.PATH, [`#d75fd7`, 170]],
   [Type.URL, [`#d75fd7`, 170]],

From 77f9d584db79870b3198a36a10032623a11d99ca Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ma=C3=ABl=20Nison?= <nison.mael@gmail.com>
Date: Mon, 2 Jun 2025 18:03:46 +0200
Subject: [PATCH 5/6] Fixes undefined display

---
 .../__snapshots__/constraints.test.ts.snap    | 115 ++++++++----------
 packages/yarnpkg-core/sources/formatUtils.ts  |   4 +-
 2 files changed, 52 insertions(+), 67 deletions(-)

diff --git a/packages/acceptance-tests/pkg-tests-specs/sources/commands/__snapshots__/constraints.test.ts.snap b/packages/acceptance-tests/pkg-tests-specs/sources/commands/__snapshots__/constraints.test.ts.snap
index ea9c65a90274..54ad5eefe1d1 100644
--- a/packages/acceptance-tests/pkg-tests-specs/sources/commands/__snapshots__/constraints.test.ts.snap
+++ b/packages/acceptance-tests/pkg-tests-specs/sources/commands/__snapshots__/constraints.test.ts.snap
@@ -352,17 +352,21 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_dependenc
 {
   "code": 1,
   "stderr": "",
-  "stdout": "Internal Error: Assertion failed: The value doesn't seem to be a valid JSON object
-    at zk (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:59369)
-    at Object.pretty (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:63583)
-    at Object.Ut (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:60068)
-    at /Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22958
-    at Array.map (<anonymous>)
-    at cF (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22935)
-    at ew.execute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:553:571)
-    at async ew.validateAndExecute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:94:787)
-    at async t.run (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:98:3263)
-    at async fqt (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:758:7977)
+  "stdout": "├─ workspace-a@workspace:packages/workspace-a
+│  ├─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
+│  │  ├─ undefined at exports.constraints (/path/to/yarn.config.cjs:3:72)
+│  │  └─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:82)
+│  └─ Conflict detected in constraint targeting devDependencies["no-deps"]; conflicting values are:
+│     ├─ undefined at exports.constraints (/path/to/yarn.config.cjs:3:72)
+│     └─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:82)
+│
+└─ workspace-b@workspace:packages/workspace-b
+   ├─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
+   │  ├─ undefined at exports.constraints (/path/to/yarn.config.cjs:3:72)
+   │  └─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:82)
+   └─ Conflict detected in constraint targeting devDependencies["no-deps"]; conflicting values are:
+      ├─ undefined at exports.constraints (/path/to/yarn.config.cjs:3:72)
+      └─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:82)
 ",
 }
 `;
@@ -371,17 +375,21 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_dependenc
 {
   "code": 1,
   "stderr": "",
-  "stdout": "Internal Error: Assertion failed: The value doesn't seem to be a valid JSON object
-    at zk (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:59369)
-    at Object.pretty (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:63583)
-    at Object.Ut (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:60068)
-    at /Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22958
-    at Array.map (<anonymous>)
-    at cF (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22935)
-    at ew.execute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:553:571)
-    at async ew.validateAndExecute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:94:787)
-    at async t.run (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:98:3263)
-    at async fqt (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:758:7977)
+  "stdout": "├─ workspace-a@workspace:packages/workspace-a
+│  ├─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
+│  │  ├─ "1.0.0"
+│  │  └─ undefined
+│  └─ Conflict detected in constraint targeting devDependencies["no-deps"]; conflicting values are:
+│     ├─ "1.0.0"
+│     └─ undefined
+│
+└─ workspace-b@workspace:packages/workspace-b
+   ├─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
+   │  ├─ "1.0.0"
+   │  └─ undefined
+   └─ Conflict detected in constraint targeting devDependencies["no-deps"]; conflicting values are:
+      ├─ "1.0.0"
+      └─ undefined
 ",
 }
 `;
@@ -734,17 +742,10 @@ exports[`Commands constraints test (one regular dependency / gen_enforced_depend
 {
   "code": 1,
   "stderr": "",
-  "stdout": "Internal Error: Assertion failed: The value doesn't seem to be a valid JSON object
-    at zk (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:59369)
-    at Object.pretty (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:63583)
-    at Object.Ut (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:60068)
-    at /Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22958
-    at Array.map (<anonymous>)
-    at cF (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22935)
-    at ew.execute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:553:571)
-    at async ew.validateAndExecute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:94:787)
-    at async t.run (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:98:3263)
-    at async fqt (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:758:7977)
+  "stdout": "└─ root-workspace-0b6124@workspace:.
+   └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
+      ├─ undefined at exports.constraints (/path/to/yarn.config.cjs:3:72)
+      └─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:82)
 ",
 }
 `;
@@ -1013,17 +1014,10 @@ exports[`Commands constraints test (two development dependencies / gen_enforced_
 {
   "code": 1,
   "stderr": "",
-  "stdout": "Internal Error: Assertion failed: The value doesn't seem to be a valid JSON object
-    at zk (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:59369)
-    at Object.pretty (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:63583)
-    at Object.Ut (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:60068)
-    at /Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22958
-    at Array.map (<anonymous>)
-    at cF (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22935)
-    at ew.execute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:553:571)
-    at async ew.validateAndExecute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:94:787)
-    at async t.run (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:98:3263)
-    at async fqt (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:758:7977)
+  "stdout": "└─ root-workspace-0b6124@workspace:.
+   └─ Conflict detected in constraint targeting devDependencies["no-deps"]; conflicting values are:
+      ├─ undefined at exports.constraints (/path/to/yarn.config.cjs:3:72)
+      └─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:82)
 ",
 }
 `;
@@ -1288,17 +1282,10 @@ exports[`Commands constraints test (two regular dependencies / gen_enforced_depe
 {
   "code": 1,
   "stderr": "",
-  "stdout": "Internal Error: Assertion failed: The value doesn't seem to be a valid JSON object
-    at zk (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:59369)
-    at Object.pretty (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:63583)
-    at Object.Ut (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:60068)
-    at /Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22958
-    at Array.map (<anonymous>)
-    at cF (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22935)
-    at ew.execute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:553:571)
-    at async ew.validateAndExecute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:94:787)
-    at async t.run (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:98:3263)
-    at async fqt (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:758:7977)
+  "stdout": "└─ root-workspace-0b6124@workspace:.
+   └─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
+      ├─ undefined at exports.constraints (/path/to/yarn.config.cjs:3:72)
+      └─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:82)
 ",
 }
 `;
@@ -1572,17 +1559,13 @@ exports[`Commands constraints test (two regular dependencies, two development de
 {
   "code": 1,
   "stderr": "",
-  "stdout": "Internal Error: Assertion failed: The value doesn't seem to be a valid JSON object
-    at zk (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:59369)
-    at Object.pretty (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:63583)
-    at Object.Ut (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:140:60068)
-    at /Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22958
-    at Array.map (<anonymous>)
-    at cF (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:248:22935)
-    at ew.execute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:553:571)
-    at async ew.validateAndExecute (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:94:787)
-    at async t.run (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:98:3263)
-    at async fqt (/Users/mael.nison/berry/packages/yarnpkg-cli/bundles/yarn.js:758:7977)
+  "stdout": "└─ root-workspace-0b6124@workspace:.
+   ├─ Conflict detected in constraint targeting dependencies["no-deps"]; conflicting values are:
+   │  ├─ undefined at exports.constraints (/path/to/yarn.config.cjs:3:72)
+   │  └─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:82)
+   └─ Conflict detected in constraint targeting devDependencies["no-deps"]; conflicting values are:
+      ├─ undefined at exports.constraints (/path/to/yarn.config.cjs:3:72)
+      └─ "1.0.0" at exports.constraints (/path/to/yarn.config.cjs:4:82)
 ",
 }
 `;
diff --git a/packages/yarnpkg-core/sources/formatUtils.ts b/packages/yarnpkg-core/sources/formatUtils.ts
index 1f95bff32fef..a9f6c681065c 100644
--- a/packages/yarnpkg-core/sources/formatUtils.ts
+++ b/packages/yarnpkg-core/sources/formatUtils.ts
@@ -4,7 +4,6 @@ import CI                                                                   from
 import {ColorFormat, formatMarkdownish}                                     from 'clipanion';
 import micromatch                                                           from 'micromatch';
 import stripAnsi                                                            from 'strip-ansi';
-import {inspect}                                                            from 'util';
 
 import {Configuration, ConfigurationValueMap}                               from './Configuration';
 import {MessageName, stringifyMessageName}                                  from './MessageName';
@@ -145,6 +144,9 @@ function prettyObject(configuration: Configuration, value: any): string {
   if (typeof value === `object` && Object.getPrototypeOf(value) === Object.prototype)
     return applyColor(configuration, `{`, Type.CODE) + Object.entries(value).map(([key, value]) => `${prettyObject(configuration, key)}: ${prettyObject(configuration, value)}`).join(`, `) + applyColor(configuration, `}`, Type.CODE);
 
+  if (typeof value === `undefined`)
+    return applyColor(configuration, `undefined`, Type.NULL);
+
   throw new Error(`Assertion failed: The value doesn't seem to be a valid JSON object`);
 }
 

From 19a11a909abfb48c00845fae5be4ab7988b27eda Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ma=C3=ABl=20Nison?= <nison.mael@gmail.com>
Date: Tue, 3 Jun 2025 20:45:29 +0200
Subject: [PATCH 6/6] Updates snapshots

---
 .../__snapshots__/constraints.test.ts.snap    | 28 +++++++++----------
 .../sources/commands/constraints.test.ts      |  2 +-
 packages/yarnpkg-core/sources/formatUtils.ts  | 19 ++++++++++---
 3 files changed, 30 insertions(+), 19 deletions(-)

diff --git a/packages/acceptance-tests/pkg-tests-specs/sources/commands/__snapshots__/constraints.test.ts.snap b/packages/acceptance-tests/pkg-tests-specs/sources/commands/__snapshots__/constraints.test.ts.snap
index 54ad5eefe1d1..f0c110b8b0e2 100644
--- a/packages/acceptance-tests/pkg-tests-specs/sources/commands/__snapshots__/constraints.test.ts.snap
+++ b/packages/acceptance-tests/pkg-tests-specs/sources/commands/__snapshots__/constraints.test.ts.snap
@@ -517,10 +517,10 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_field (ex
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 ├─ workspace-a@workspace:packages/workspace-a
-│  └─ ⚙ Extraneous field dependencies currently set to {"no-deps": "1.0.0", "no-deps-bins": "1.0.0"}
+│  └─ ⚙ Extraneous field dependencies currently set to { "no-deps": "1.0.0", "no-deps-bins": "1.0.0" }
 │
 └─ workspace-b@workspace:packages/workspace-b
-   └─ ⚙ Extraneous field dependencies currently set to {"no-deps": "1.0.0", "no-deps-bins": "1.0.0"}
+   └─ ⚙ Extraneous field dependencies currently set to { "no-deps": "1.0.0", "no-deps-bins": "1.0.0" }
 ",
 }
 `;
@@ -532,10 +532,10 @@ exports[`Commands constraints test (multiple workspaces / gen_enforced_field (ex
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 ├─ workspace-a@workspace:packages/workspace-a
-│  └─ ⚙ Extraneous field dependencies currently set to {"no-deps": "1.0.0", "no-deps-bins": "1.0.0"}
+│  └─ ⚙ Extraneous field dependencies currently set to { "no-deps": "1.0.0", "no-deps-bins": "1.0.0" }
 │
 └─ workspace-b@workspace:packages/workspace-b
-   └─ ⚙ Extraneous field dependencies currently set to {"no-deps": "1.0.0", "no-deps-bins": "1.0.0"}
+   └─ ⚙ Extraneous field dependencies currently set to { "no-deps": "1.0.0", "no-deps-bins": "1.0.0" }
 ",
 }
 `;
@@ -837,7 +837,7 @@ exports[`Commands constraints test (one regular dependency / gen_enforced_field
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Extraneous field dependencies currently set to {"no-deps": "1.0.0"}
+   └─ ⚙ Extraneous field dependencies currently set to { "no-deps": "1.0.0" }
 ",
 }
 `;
@@ -849,7 +849,7 @@ exports[`Commands constraints test (one regular dependency / gen_enforced_field
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Extraneous field dependencies currently set to {"no-deps": "1.0.0"}
+   └─ ⚙ Extraneous field dependencies currently set to { "no-deps": "1.0.0" }
 ",
 }
 `;
@@ -1377,7 +1377,7 @@ exports[`Commands constraints test (two regular dependencies / gen_enforced_fiel
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Extraneous field dependencies currently set to {"no-deps": "1.0.0", "no-deps-bins": "1.0.0"}
+   └─ ⚙ Extraneous field dependencies currently set to { "no-deps": "1.0.0", "no-deps-bins": "1.0.0" }
 ",
 }
 `;
@@ -1389,7 +1389,7 @@ exports[`Commands constraints test (two regular dependencies / gen_enforced_fiel
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Extraneous field dependencies currently set to {"no-deps": "1.0.0", "no-deps-bins": "1.0.0"}
+   └─ ⚙ Extraneous field dependencies currently set to { "no-deps": "1.0.0", "no-deps-bins": "1.0.0" }
 ",
 }
 `;
@@ -1657,7 +1657,7 @@ exports[`Commands constraints test (two regular dependencies, two development de
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Extraneous field dependencies currently set to {"no-deps": "1.0.0", "no-deps-bins": "1.0.0"}
+   └─ ⚙ Extraneous field dependencies currently set to { "no-deps": "1.0.0", "no-deps-bins": "1.0.0" }
 ",
 }
 `;
@@ -1669,7 +1669,7 @@ exports[`Commands constraints test (two regular dependencies, two development de
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ root-workspace-0b6124@workspace:.
-   └─ ⚙ Extraneous field dependencies currently set to {"no-deps": "1.0.0", "no-deps-bins": "1.0.0"}
+   └─ ⚙ Extraneous field dependencies currently set to { "no-deps": "1.0.0", "no-deps-bins": "1.0.0" }
 ",
 }
 `;
@@ -1985,7 +1985,7 @@ exports[`Commands constraints test (various field types / workspace_field w/ arr
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ foo@workspace:.
-   └─ ⚙ Missing field _files; expected ["/a", "/b", "/c"]
+   └─ ⚙ Missing field _files; expected [ "/a", "/b", "/c" ]
 ",
 }
 `;
@@ -1997,7 +1997,7 @@ exports[`Commands constraints test (various field types / workspace_field w/ arr
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ foo@workspace:.
-   └─ ⚙ Missing field _files; expected ["/a", "/b", "/c"]
+   └─ ⚙ Missing field _files; expected [ "/a", "/b", "/c" ]
 ",
 }
 `;
@@ -2009,7 +2009,7 @@ exports[`Commands constraints test (various field types / workspace_field w/ obj
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ foo@workspace:.
-   └─ ⚙ Missing field _repository; expected {"type": "git", "url": "ssh://git@github.com/yarnpkg/berry.git", "directory": "."}
+   └─ ⚙ Missing field _repository; expected { "type": "git", "url": "ssh://git@github.com/yarnpkg/berry.git", "directory": "." }
 ",
 }
 `;
@@ -2021,7 +2021,7 @@ exports[`Commands constraints test (various field types / workspace_field w/ obj
   "stdout": "➤ Those errors can all be fixed by running yarn constraints --fix
 
 └─ foo@workspace:.
-   └─ ⚙ Missing field _repository; expected {"type": "git", "url": "ssh://git@github.com/yarnpkg/berry.git", "directory": "."}
+   └─ ⚙ Missing field _repository; expected { "type": "git", "url": "ssh://git@github.com/yarnpkg/berry.git", "directory": "." }
 ",
 }
 `;
diff --git a/packages/acceptance-tests/pkg-tests-specs/sources/commands/constraints.test.ts b/packages/acceptance-tests/pkg-tests-specs/sources/commands/constraints.test.ts
index b389e86eee2b..e615451679dd 100644
--- a/packages/acceptance-tests/pkg-tests-specs/sources/commands/constraints.test.ts
+++ b/packages/acceptance-tests/pkg-tests-specs/sources/commands/constraints.test.ts
@@ -154,7 +154,7 @@ describe(`Commands`, () => {
         };
       `);
 
-      await expect(run(`constraints`)).rejects.toThrow(`Invalid field foo; expected {"a": true, "b": true}, found {"b": true, "a": true}`);
+      await expect(run(`constraints`)).rejects.toThrow(`Invalid field foo; expected { "a": true, "b": true }, found { "b": true, "a": true }`);
     }));
 
     for (const [environmentDescription, environment] of Object.entries(environments)) {
diff --git a/packages/yarnpkg-core/sources/formatUtils.ts b/packages/yarnpkg-core/sources/formatUtils.ts
index a9f6c681065c..54d5ec711290 100644
--- a/packages/yarnpkg-core/sources/formatUtils.ts
+++ b/packages/yarnpkg-core/sources/formatUtils.ts
@@ -126,8 +126,13 @@ function sizeToText(size: number) {
 }
 
 function prettyObject(configuration: Configuration, value: any): string {
-  if (Array.isArray(value))
-    return applyColor(configuration, `[`, Type.CODE) + value.map(item => prettyObject(configuration, item)).join(`, `) + applyColor(configuration, `]`, Type.CODE);
+  if (Array.isArray(value)) {
+    if (value.length === 0) {
+      return applyColor(configuration, `[]`, Type.CODE);
+    } else {
+      return applyColor(configuration, `[ `, Type.CODE) + value.map(item => prettyObject(configuration, item)).join(`, `) + applyColor(configuration, ` ]`, Type.CODE);
+    }
+  }
 
   if (typeof value === `string`)
     return applyColor(configuration, JSON.stringify(value), Type.STRING);
@@ -141,8 +146,14 @@ function prettyObject(configuration: Configuration, value: any): string {
   if (value === null)
     return applyColor(configuration, `null`, Type.NULL);
 
-  if (typeof value === `object` && Object.getPrototypeOf(value) === Object.prototype)
-    return applyColor(configuration, `{`, Type.CODE) + Object.entries(value).map(([key, value]) => `${prettyObject(configuration, key)}: ${prettyObject(configuration, value)}`).join(`, `) + applyColor(configuration, `}`, Type.CODE);
+  if (typeof value === `object` && Object.getPrototypeOf(value) === Object.prototype) {
+    const entries = Object.entries(value);
+    if (entries.length === 0) {
+      return applyColor(configuration, `{}`, Type.CODE);
+    } else {
+      return applyColor(configuration, `{ `, Type.CODE) + entries.map(([key, value]) => `${prettyObject(configuration, key)}: ${prettyObject(configuration, value)}`).join(`, `) + applyColor(configuration, ` }`, Type.CODE);
+    }
+  }
 
   if (typeof value === `undefined`)
     return applyColor(configuration, `undefined`, Type.NULL);