| 1 | "use strict";
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| 2 | /**
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| 3 | * @license
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| 4 | * Copyright Google LLC All Rights Reserved.
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| 5 | *
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| 6 | * Use of this source code is governed by an MIT-style license that can be
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| 7 | * found in the LICENSE file at https://angular.io/license
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| 8 | */
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| 9 | Object.defineProperty(exports, "__esModule", { value: true });
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| 10 | exports.getKeywords = void 0;
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| 11 | const core_1 = require("@babel/core");
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| 12 | /**
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| 13 | * The name of the Angular class metadata function created by the Angular compiler.
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| 14 | */
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| 15 | const SET_CLASS_METADATA_NAME = 'ɵsetClassMetadata';
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| 16 | /**
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| 17 | * Provides one or more keywords that if found within the content of a source file indicate
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| 18 | * that this plugin should be used with a source file.
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| 19 | *
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| 20 | * @returns An a string iterable containing one or more keywords.
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| 21 | */
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| 22 | function getKeywords() {
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| 23 | return [SET_CLASS_METADATA_NAME];
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| 24 | }
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| 25 | exports.getKeywords = getKeywords;
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| 26 | /**
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| 27 | * A babel plugin factory function for eliding the Angular class metadata function (`ɵsetClassMetadata`).
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| 28 | *
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| 29 | * @returns A babel plugin object instance.
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| 30 | */
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| 31 | function default_1() {
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| 32 | return {
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| 33 | visitor: {
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| 34 | CallExpression(path) {
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| 35 | var _a;
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| 36 | const callee = path.node.callee;
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| 37 | // The function being called must be the metadata function name
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| 38 | let calleeName;
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| 39 | if (core_1.types.isMemberExpression(callee) && core_1.types.isIdentifier(callee.property)) {
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| 40 | calleeName = callee.property.name;
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| 41 | }
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| 42 | else if (core_1.types.isIdentifier(callee)) {
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| 43 | calleeName = callee.name;
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| 44 | }
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| 45 | if (calleeName !== SET_CLASS_METADATA_NAME) {
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| 46 | return;
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| 47 | }
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| 48 | // There must be four arguments that meet the following criteria:
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| 49 | // * First must be an identifier
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| 50 | // * Second must be an array literal
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| 51 | const callArguments = path.node.arguments;
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| 52 | if (callArguments.length !== 4 ||
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| 53 | !core_1.types.isIdentifier(callArguments[0]) ||
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| 54 | !core_1.types.isArrayExpression(callArguments[1])) {
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| 55 | return;
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| 56 | }
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| 57 | // The metadata function is always emitted inside a function expression
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| 58 | if (!((_a = path.getFunctionParent()) === null || _a === void 0 ? void 0 : _a.isFunctionExpression())) {
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| 59 | return;
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| 60 | }
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| 61 | // Replace the metadata function with `void 0` which is the equivalent return value
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| 62 | // of the metadata function.
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| 63 | path.replaceWith(path.scope.buildUndefinedNode());
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| 64 | },
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| 65 | },
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| 66 | };
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| 67 | }
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| 68 | exports.default = default_1;
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