fix: Ignore minContentWidth if greater than lineWidth (fixes #562)

Author: eemeli

docs/03_options.md

@@ -161,7 +161,7 @@ Used by: `stringify()` and `doc.toString()`
 | indent                         | `number`                                                                                  | `2`       | The number of spaces to use when indenting code. Should be a strictly positive integer.                                                                                                                                       |
 | indentSeq                      | `boolean`                                                                                 | `true`    | Whether block sequences should be indented.                                                                                                                                                                                   |
 | lineWidth                      | `number`                                                                                  | `80`      | Maximum line width (set to `0` to disable folding). This is a soft limit, as only double-quoted semantics allow for inserting a line break in the middle of a word.                                                           |
-| minContentWidth                | `number`                                                                                  | `20`      | Minimum line width for highly-indented content (set to `0` to disable).                                                                                                                                                       |
+| minContentWidth                | `number`                                                                                  | `20`      | Minimum line width for highly-indented content (set to `0` to disable). Ignored if greater than lineWidth.                                                                                                                    |
 | nullStr                        | `string`                                                                                  | `'null'`  | String representation for `null` values.                                                                                                                                                                                      |
 | simpleKeys                     | `boolean`                                                                                 | `false`   | Require keys to be scalars and always use implicit rather than explicit notation.                                                                                                                                             |
 | singleQuote                    | `boolean ⎮ null`                                                                          | `null`    | Use 'single quote' rather than "double quote" where applicable. Set to `false` to disable single quotes completely.                                                                                                           |

src/stringify/foldFlowLines.ts

@@ -51,6 +51,7 @@ export function foldFlowLines(
   }: FoldOptions = {}
 ) {
   if (!lineWidth || lineWidth < 0) return text
+  if (lineWidth < minContentWidth) minContentWidth = 0
   const endStep = Math.max(1 + minContentWidth, 1 + lineWidth - indent.length)
   if (text.length <= endStep) return text
   const folds = []

tests/doc/stringify.ts

@@ -920,6 +920,13 @@ describe('lineWidth', () => {
       "[ 'Sed', 'ut', 'perspiciatis', 'unde', 'omnis', 'iste', 'natus', 'error', 'sit', 'voluptatem', 'accusantium', 'doloremque', 'laudantium,', 'totam' ]\n"
     )
   })
+
+  test('less than minContentWidth (eemeli/yaml#562)', () => {
+    const doc = YAML.parseDocument('>\ntest test test test test')
+    expect(doc.toString({ lineWidth: 18, minContentWidth: 20 })).toBe(
+      '>\ntest test test\ntest test\n'
+    )
+  })
 })
 
 describe('collectionStyle', () => {