v1.0 with SW PWA enabled

frontend/node_modules/workbox-build/build/lib/modify-url-prefix-transform.js

@@ -0,0 +1,51 @@
+"use strict";
+/*
+  Copyright 2018 Google LLC
+
+  Use of this source code is governed by an MIT-style
+  license that can be found in the LICENSE file or at
+  https://opensource.org/licenses/MIT.
+*/
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.modifyURLPrefixTransform = void 0;
+const errors_1 = require("./errors");
+const escape_regexp_1 = require("./escape-regexp");
+function modifyURLPrefixTransform(modifyURLPrefix) {
+    if (!modifyURLPrefix ||
+        typeof modifyURLPrefix !== 'object' ||
+        Array.isArray(modifyURLPrefix)) {
+        throw new Error(errors_1.errors['modify-url-prefix-bad-prefixes']);
+    }
+    // If there are no entries in modifyURLPrefix, just return an identity
+    // function as a shortcut.
+    if (Object.keys(modifyURLPrefix).length === 0) {
+        return (manifest) => {
+            return { manifest };
+        };
+    }
+    for (const key of Object.keys(modifyURLPrefix)) {
+        if (typeof modifyURLPrefix[key] !== 'string') {
+            throw new Error(errors_1.errors['modify-url-prefix-bad-prefixes']);
+        }
+    }
+    // Escape the user input so it's safe to use in a regex.
+    const safeModifyURLPrefixes = Object.keys(modifyURLPrefix).map(escape_regexp_1.escapeRegExp);
+    // Join all the `modifyURLPrefix` keys so a single regex can be used.
+    const prefixMatchesStrings = safeModifyURLPrefixes.join('|');
+    // Add `^` to the front the prefix matches so it only matches the start of
+    // a string.
+    const modifyRegex = new RegExp(`^(${prefixMatchesStrings})`);
+    return (originalManifest) => {
+        const manifest = originalManifest.map((entry) => {
+            if (typeof entry.url !== 'string') {
+                throw new Error(errors_1.errors['manifest-entry-bad-url']);
+            }
+            entry.url = entry.url.replace(modifyRegex, (match) => {
+                return modifyURLPrefix[match];
+            });
+            return entry;
+        });
+        return { manifest };
+    };
+}
+exports.modifyURLPrefixTransform = modifyURLPrefixTransform;