feat(lexer): Lexer

Signed-off-by: Lexus Drumgold <[email protected]>

Author: unicornware

.codecov.yml

@@ -88,4 +88,5 @@ ignore:
   - src/types/
 
 profiling:
-  critical_files_paths: []
+  critical_files_paths:
+    - src/lexer.ts

.eslintignore

@@ -8,7 +8,9 @@
 **/*config.*.timestamp*
 **/.DS_Store
 **/.temp/
+**/__tests__/benchmark.json
 **/__tests__/report.*
+**/__tests__/typecheck.json
 **/coverage/
 **/dist/
 **/node_modules/

.eslintrc.cjs

@@ -10,7 +10,15 @@
  */
 const config = {
   extends: ['./.eslintrc.base.cjs'],
-  overrides: [...require('./.eslintrc.base.cjs').overrides],
+  overrides: [
+    ...require('./.eslintrc.base.cjs').overrides,
+    {
+      files: ['__fixtures__/dbl-linear.ts'],
+      rules: {
+        '@typescript-eslint/require-await': 0
+      }
+    }
+  ],
   root: true
 }
 

.github/infrastructure.yml

@@ -172,7 +172,7 @@ repository:
   automated_security_fixes: true
   default_branch: main
   delete_branch_on_merge: true
-  description: unified compliant file parser for docast
+  description: docast utility for parsing docblocks
   has_issues: true
   has_projects: true
   has_wiki: false

.gitignore

@@ -47,6 +47,7 @@ yarn-error.log*
 **/*config.*.timestamp*
 **/__tests__/benchmark.json
 **/__tests__/report.*
+**/__tests__/typecheck.json
 **/coverage/
 **/tsconfig*temp.json
 *.lcov

README.md

@@ -2,7 +2,7 @@
 
 [![github release](https://img.shields.io/github/v/release/flex-development/docast-util-from-docs.svg?include_prereleases&sort=semver)](https://github.com/flex-development/docast-util-from-docs/releases/latest)
 [![npm](https://img.shields.io/npm/v/@flex-development/docast-util-from-docs.svg)](https://npmjs.com/package/@flex-development/docast-util-from-docs)
-[![codecov](https://codecov.io/gh/flex-development/docast-util-from-docs/branch/main/graph/badge.svg?token=R2TPEBGWXB)](https://codecov.io/gh/flex-development/docast-util-from-docs)
+[![codecov](https://codecov.io/gh/flex-development/docast-util-from-docs/graph/badge.svg?token=um87Ekggjn)](https://codecov.io/gh/flex-development/docast-util-from-docs)
 [![module type: esm](https://img.shields.io/badge/module%20type-esm-brightgreen)](https://github.com/voxpelli/badges-cjs-esm)
 [![license](https://img.shields.io/github/license/flex-development/docast-util-from-docs.svg)](LICENSE.md)
 [![conventional commits](https://img.shields.io/badge/-conventional%20commits-fe5196?logo=conventional-commits&logoColor=ffffff)](https://conventionalcommits.org/)

__fixtures__/.gitkeep

@@ -0,0 +1,63 @@
+/**
+ * @file Fixtures - dblLinear
+ * @module fixtures/dblLinear
+ * @see https://codewars.com/kata/5672682212c8ecf83e000050
+ */
+
+/**
+ * Consider a sequence `u` where `u` is defined as follows:
+ *
+ *  1. The number `u(0) = 1` is the first one in `u`
+ *  2. For each `x` in `u`, `y = 2x + 1` and `z = 3x + 1` must be in `u` too
+ *  3. There are no other numbers in `u`
+ *
+ * Given an index, `n`, the function returns the element at `u(n)`.
+ *
+ * @async
+ *
+ * @example
+ *  await dblLinear(0) // 1
+ * @example
+ *  await dblLinear(10) // 22
+ * @example
+ *  await dblLinear(100) // 447
+ * @example
+ *  await dblLinear(7687) // 111718
+ *
+ * @param {number} n - Index of element to get
+ * @return {Promise<number>} Element at `u(n)`
+ */
+async function dblLinear(n: number): Promise<number> {
+  /** @const {number[]} u - Sequence */
+  const u: number[] = [1]
+
+  /** @var {number} j - Index of x in {@linkcode u} used to calculate y */
+  let j: number = 0
+
+  /** @var {number} k - Index of x in {@linkcode u} used to calculate z */
+  let k: number = 0
+
+  /*
+   * build sequence up to index n (inclusive)
+   */
+  for (let i = 1; i <= n; i++) {
+    /** @const {number} y - `y` */
+    const y: number = 2 * u[j]! + 1
+
+    /** @const {number} z - `z` */
+    const z: number = 3 * u[k]! + 1
+
+    /* set sequence value to smallest value in [y, z] */
+    u[i] = Math.min(y, z)
+
+    // increase of index of x used to calculate y by 1
+    if (u[i] === y) j++
+
+    // increase of index of x used to calculate z by 1
+    if (u[i] === z) k++
+  }
+
+  return u[n]!
+}
+
+export default dblLinear

__fixtures__/dbl-linear.ts

@@ -0,0 +1,44 @@
+/**
+ * @file Fixtures - detectSyntax
+ * @module fixtures/detectSyntax
+ */
+
+import { hasCJSSyntax, hasESMSyntax } from '@flex-development/mlly'
+
+/**
+ * Detects if `code` contains CommonJS syntax, ESM syntax, or a mixture of both.
+ *
+ * Ignores matches in comments.
+ *
+ * @see {@linkcode hasCJSSyntax}
+ * @see {@linkcode hasESMSyntax}
+ *
+ * @example
+ *  import { detectSyntax } from '@flex-development/mlly'
+ *
+ *  console.debug(detectSyntax('export default {}'))
+ *
+ * @param {string} code - Code to evaluate
+ * @return {{ cjs: boolean; esm: boolean; mixed: boolean }} Detection result
+ */
+const detectSyntax = (
+  code: string
+): { cjs: boolean; esm: boolean; mixed: boolean } => {
+  /**
+   * CommonJS syntax check.
+   *
+   * @const {boolean} cjs
+   */
+  const cjs: boolean = hasCJSSyntax(code)
+
+  /**
+   * ESM syntax check.
+   *
+   * @const {boolean} esm
+   */
+  const esm: boolean = hasESMSyntax(code)
+
+  return { cjs, esm, mixed: cjs && esm }
+}
+
+export default detectSyntax

__fixtures__/detect-syntax.ts

@@ -63,7 +63,7 @@
     "fix:dedupe": "yarn dedupe --strategy=highest",
     "fix:format": "dprint fmt",
     "fix:lint": "yarn check:lint --cache --fix",
-    "postinstall": "[ -f ./node_modules/.bin/husky ] && chmod +x .husky/* && husky install || exit 0",
+    "postinstall": "[ -f ./node_modules/.bin/husky ] && chmod +x .husky/* && husky || exit 0",
     "postpack": "toggle-scripts +postinstall",
     "postpublish": "toggle-scripts +prepack",
     "prepack": "toggle-scripts -postinstall && yarn build",