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frontend/node_modules/zrender/build/transformImport.js

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+// adding js extension in the import statement.
+
+// Reference:
+// https://regexr.com/47jlq
+// https://gist.github.com/manekinekko/7e58a17bc62a9be47172
+const regexp = /((?:(?:import)|(?:export))\s+?(?:(?:(?:[\w*\s{},\/]*)\s+from\s+?)|))(?:(?:"(.*?)")|(?:'(.*?)'))([\s]*?(?:;|$|))/g;
+
+module.exports.transformImport = function (code, processModuleName) {
+    return code.replace(regexp, (str, prefix, moduleNameA, moduleNameB, postfix) => {
+        let moduleName = (moduleNameA === undefined ? moduleNameB : moduleNameA).trim();
+        const quote = moduleNameA === undefined ? "'" : '"';
+        return prefix + quote + processModuleName(moduleName) + quote + postfix;
+        // Not support other extensions.
+    });
+}
+
+
+const testCases = `import videos from './videos/index.js'
+
+export default (socket, context) => {
+    // dynamically importing all the socket.io handler (it's dynamic import that happen at run time)
+  import {
+	something
+} from "./test/okbb"
+
+const f = 2;
+
+import test from 'obb'
+
+
+import {
+  Component
+} from '@angular2/core';
+
+import defaultMember from "module-0";
+
+import   *    as name from "module-1  ";
+
+import   {  member }   from "  module-2";
+
+import { member as alias } from "module-3";
+
+import { member1 , member2 } from "module-4";
+
+import { member1 , member2 as alias2 , member3 as alias3 } from "module-5";
+
+import defaultMember, { member, member } from "module-6";
+
+import defaultMember, * as name from "module-7";
+
+import "module-8";
+
+import "module-9"    // comment no problem
+
+import {
+    AAAA,
+    // BBB
+} from 'module-10';
+
+import "module-b' // doesn't match -> the opening and closing quation mark are different
+
+importing hya from 'ttt'
+
+import fbsfrom ''
+
+
+// Export expressions.
+export { aaa };
+
+export * from "module-11";
+
+export { aaa } from "module-12";
+
+// Should not be parsed
+export default aaa;
+
+export function bbb () {
+};
+`
+
+module.exports.runTest = function () {
+    const expected = [
+        './videos/index.js',
+        './test/okbb',
+        'obb',
+        '@angular2/core',
+        'module-0',
+        'module-1',
+        'module-2',
+        'module-3',
+        'module-4',
+        'module-5',
+        'module-6',
+        'module-7',
+        'module-8',
+        'module-9',
+        'module-10',
+        'module-11',
+        'module-12'
+    ]
+    let cursor = 0;
+    module.exports.transformImport(testCases, (moduleName) => {
+        if (expected[cursor] !== moduleName) {
+            throw new Error(`Expected ${expected[cursor]}. Actual ${moduleName}`);
+        }
+        cursor++;
+        return moduleName;
+    })
+    if (cursor !== expected.length) {
+        throw new Error('Test failed');
+    }
+    console.log('All test passed!')
+}
+
+// module.exports.runTest();