Add the hashPrefix option

Author: pascalduez

README.md

@@ -70,6 +70,7 @@ npm install --save-dev babel-plugin-css-modules-transform
                 "generateScopedName": "[name]__[local]___[hash:base64:5]", // in case you don't want to use a function
                 "generateScopedName": "./path/to/module-exporting-a-function.js", // in case you want to use a function
                 "generateScopedName": "npm-module-name",
+                "hashPrefix": "string",
                 "ignore": "*css",
                 "ignore": "./path/to/module-exporting-a-function-or-regexp.js",
                 "preprocessCss": "./path/to/module-exporting-a-function.js",

package.json

@@ -25,7 +25,7 @@
   },
   "homepage": "https://github.com/michalkvasnicak/babel-plugin-css-modules-transform#readme",
   "dependencies": {
-    "css-modules-require-hook": "^4.0.2",
+    "css-modules-require-hook": "^4.0.3",
     "mkdirp": "^0.5.1"
   },
   "devDependencies": {

src/options_resolvers/hashPrefix.js

@@ -0,0 +1,15 @@
+import { isString } from '../utils';
+
+/**
+ * Resolves hashPrefix option for css-modules-require-hook
+ *
+ * @param {*} value
+ * @returns {boolean}
+ */
+export default function hashPrefix(value/* , currentConfig */) {
+    if (!isString(value)) {
+        throw new Error(`Configuration 'hashPrefix' is not a string`);
+    }
+
+    return value;
+}

test/options_resolvers/hashPrefix.spec.js

@@ -0,0 +1,13 @@
+import { expect } from 'chai';
+
+import hashPrefix from '../../src/options_resolvers/hashPrefix';
+
+describe('options_resolvers/hashPrefix', () => {
+    it('should throw if hashPrefix value is not a string', () => {
+        expect(
+            () => hashPrefix(null)
+        ).to.throw();
+
+        expect(hashPrefix('hashPrefix')).to.be.equal('hashPrefix');
+    });
+});