refactor: removed camelCase package from dependencies

package.json

@@ -42,7 +42,6 @@
     "webpack": "^4.27.0 || ^5.0.0"
   },
   "dependencies": {
-    "camelcase": "^6.2.0",
     "icss-utils": "^5.1.0",
     "loader-utils": "^2.0.0",
     "postcss": "^8.2.15",

src/utils.js

@@ -10,7 +10,6 @@ import modulesValues from "postcss-modules-values";
 import localByDefault from "postcss-modules-local-by-default";
 import extractImports from "postcss-modules-extract-imports";
 import modulesScope from "postcss-modules-scope";
-import camelCase from "camelcase";
 
 const WEBPACK_IGNORE_COMMENT_REGEXP = /webpackIgnore:(\s+)?(true|false)/;
 
@@ -19,6 +18,68 @@ const regexSingleEscape = /[ -,.\/:-@[\]\^`{-~]/;
 const regexExcessiveSpaces =
   /(^|\\+)?(\\[A-F0-9]{1,6})\x20(?![a-fA-F0-9\x20])/g;
 
+const preserveCamelCase = (string) => {
+  let result = string;
+  let isLastCharLower = false;
+  let isLastCharUpper = false;
+  let isLastLastCharUpper = false;
+
+  for (let i = 0; i < result.length; i++) {
+    const character = result[i];
+
+    if (isLastCharLower && /[\p{Lu}]/u.test(character)) {
+      result = `${result.slice(0, i)}-${result.slice(i)}`;
+      isLastCharLower = false;
+      isLastLastCharUpper = isLastCharUpper;
+      isLastCharUpper = true;
+      i += 1;
+    } else if (
+      isLastCharUpper &&
+      isLastLastCharUpper &&
+      /[\p{Ll}]/u.test(character)
+    ) {
+      result = `${result.slice(0, i - 1)}-${result.slice(i - 1)}`;
+      isLastLastCharUpper = isLastCharUpper;
+      isLastCharUpper = false;
+      isLastCharLower = true;
+    } else {
+      isLastCharLower =
+        character.toLowerCase() === character &&
+        character.toUpperCase() !== character;
+      isLastLastCharUpper = isLastCharUpper;
+      isLastCharUpper =
+        character.toUpperCase() === character &&
+        character.toLowerCase() !== character;
+    }
+  }
+
+  return result;
+};
+
+function camelCase(input) {
+  let result = input.trim();
+
+  if (result.length === 0) {
+    return "";
+  }
+
+  if (result.length === 1) {
+    return result.toLowerCase();
+  }
+
+  const hasUpperCase = result !== result.toLowerCase();
+
+  if (hasUpperCase) {
+    result = preserveCamelCase(result);
+  }
+
+  return result
+    .replace(/^[_.\- ]+/, "")
+    .toLowerCase()
+    .replace(/[_.\- ]+([\p{Alpha}\p{N}_]|$)/gu, (_, p1) => p1.toUpperCase())
+    .replace(/\d+([\p{Alpha}\p{N}_]|$)/gu, (m) => m.toUpperCase());
+}
+
 function escape(string) {
   let output = "";
   let counter = 0;
@@ -881,4 +942,5 @@ export {
   sort,
   WEBPACK_IGNORE_COMMENT_REGEXP,
   combineRequests,
+  camelCase,
 };

test/__snapshots__/camelCase.test.js.snap

@@ -0,0 +1,63 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`camelCase should transform 1`] = `""`;
+
+exports[`camelCase should transform:   foo  bar  1`] = `"fooBar"`;
+
+exports[`camelCase should transform: __foo__bar__ 1`] = `"fooBar"`;
+
+exports[`camelCase should transform: - 1`] = `"-"`;
+
+exports[`camelCase should transform: --__--_--_ 1`] = `""`;
+
+exports[`camelCase should transform: --foo..bar 1`] = `"fooBar"`;
+
+exports[`camelCase should transform: --foo---bar 1`] = `"fooBar"`;
+
+exports[`camelCase should transform: --foo---bar-- 1`] = `"fooBar"`;
+
+exports[`camelCase should transform: --foo--1 1`] = `"foo1"`;
+
+exports[`camelCase should transform: --foo-bar 1`] = `"fooBar"`;
+
+exports[`camelCase should transform: 1Hello 1`] = `"1Hello"`;
+
+exports[`camelCase should transform: A::a 1`] = `"a::a"`;
+
+exports[`camelCase should transform: F 1`] = `"f"`;
+
+exports[`camelCase should transform: FOO-BAR 1`] = `"fooBar"`;
+
+exports[`camelCase should transform: FOÈ-BAR 1`] = `"foèBar"`;
+
+exports[`camelCase should transform: FOÈ-BAr 1`] = `"foèBAr"`;
+
+exports[`camelCase should transform: Hello1World11foo 1`] = `"hello1World11Foo"`;
+
+exports[`camelCase should transform: foo 1`] = `"foo"`;
+
+exports[`camelCase should transform: foo bar 1`] = `"fooBar"`;
+
+exports[`camelCase should transform: foo bar! 1`] = `"fooBar!"`;
+
+exports[`camelCase should transform: foo bar# 1`] = `"fooBar#"`;
+
+exports[`camelCase should transform: foo bar? 1`] = `"fooBar?"`;
+
+exports[`camelCase should transform: foo_bar 1`] = `"fooBar"`;
+
+exports[`camelCase should transform: foo--bar 1`] = `"fooBar"`;
+
+exports[`camelCase should transform: foo-bar 1`] = `"fooBar"`;
+
+exports[`camelCase should transform: foo-bar-baz 1`] = `"fooBarBaz"`;
+
+exports[`camelCase should transform: fooBar 1`] = `"fooBar"`;
+
+exports[`camelCase should transform: fooBar-baz 1`] = `"fooBarBaz"`;
+
+exports[`camelCase should transform: fooBarBaz-bazzy 1`] = `"fooBarBazBazzy"`;
+
+exports[`camelCase should transform: h2w 1`] = `"h2W"`;
+
+exports[`camelCase should transform: mGridCol6@md 1`] = `"mGridCol6@md"`;

test/camelCase.test.js

@@ -0,0 +1,43 @@
+import { camelCase } from "../src/utils";
+
+describe("camelCase", () => {
+  const data = [
+    "foo",
+    "foo-bar",
+    "foo-bar-baz",
+    "foo--bar",
+    "--foo-bar",
+    "--foo---bar",
+    "FOO-BAR",
+    "FOÈ-BAR",
+    "FOÈ-BAr",
+    "--foo---bar--",
+    "--foo--1",
+    "--foo..bar",
+    "foo_bar",
+    "__foo__bar__",
+    "foo bar",
+    "  foo  bar ",
+    "-",
+    "fooBar",
+    "fooBar-baz",
+    "fooBarBaz-bazzy",
+    "",
+    "--__--_--_",
+    "A::a",
+    "1Hello",
+    "h2w",
+    "F",
+    "foo bar?",
+    "foo bar!",
+    "foo bar#",
+    "mGridCol6@md",
+    "Hello1World11foo",
+  ];
+
+  for (const entry of data) {
+    it(`should transform`, () => {
+      expect(camelCase(entry)).toMatchSnapshot(`${entry}`);
+    });
+  }
+});