| 1 | "use strict";
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| 2 |
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| 3 | Object.defineProperty(exports, "__esModule", {
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| 4 | value: true
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| 5 | });
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| 6 | exports.default = void 0;
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| 7 | var _helperPluginUtils = require("@babel/helper-plugin-utils");
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| 8 | var _pluginSyntaxFlow = require("@babel/plugin-syntax-flow");
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| 9 | var _core = require("@babel/core");
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| 10 | var _default = exports.default = (0, _helperPluginUtils.declare)((api, opts) => {
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| 11 | api.assertVersion(7);
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| 12 | const FLOW_DIRECTIVE = /(@flow(\s+(strict(-local)?|weak))?|@noflow)/;
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| 13 | let skipStrip = false;
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| 14 | const {
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| 15 | requireDirective = false
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| 16 | } = opts;
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| 17 | {
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| 18 | var {
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| 19 | allowDeclareFields = false
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| 20 | } = opts;
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| 21 | }
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| 22 | return {
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| 23 | name: "transform-flow-strip-types",
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| 24 | inherits: _pluginSyntaxFlow.default,
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| 25 | visitor: {
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| 26 | Program(path, {
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| 27 | file: {
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| 28 | ast: {
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| 29 | comments
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| 30 | }
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| 31 | }
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| 32 | }) {
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| 33 | skipStrip = false;
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| 34 | let directiveFound = false;
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| 35 | if (comments) {
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| 36 | for (const comment of comments) {
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| 37 | if (FLOW_DIRECTIVE.test(comment.value)) {
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| 38 | directiveFound = true;
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| 39 | comment.value = comment.value.replace(FLOW_DIRECTIVE, "");
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| 40 | if (!comment.value.replace(/\*/g, "").trim()) {
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| 41 | comment.ignore = true;
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| 42 | }
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| 43 | }
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| 44 | }
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| 45 | }
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| 46 | if (!directiveFound && requireDirective) {
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| 47 | skipStrip = true;
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| 48 | }
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| 49 | },
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| 50 | ImportDeclaration(path) {
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| 51 | if (skipStrip) return;
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| 52 | if (!path.node.specifiers.length) return;
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| 53 | let typeCount = 0;
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| 54 | path.node.specifiers.forEach(({
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| 55 | importKind
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| 56 | }) => {
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| 57 | if (importKind === "type" || importKind === "typeof") {
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| 58 | typeCount++;
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| 59 | }
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| 60 | });
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| 61 | if (typeCount === path.node.specifiers.length) {
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| 62 | path.remove();
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| 63 | }
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| 64 | },
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| 65 | Flow(path) {
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| 66 | if (skipStrip) {
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| 67 | throw path.buildCodeFrameError("A @flow directive is required when using Flow annotations with " + "the `requireDirective` option.");
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| 68 | }
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| 69 | path.remove();
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| 70 | },
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| 71 | ClassPrivateProperty(path) {
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| 72 | if (skipStrip) return;
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| 73 | path.node.typeAnnotation = null;
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| 74 | },
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| 75 | Class(path) {
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| 76 | if (skipStrip) return;
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| 77 | path.node.implements = null;
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| 78 | path.get("body.body").forEach(child => {
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| 79 | if (child.isClassProperty()) {
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| 80 | const {
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| 81 | node
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| 82 | } = child;
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| 83 | {
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| 84 | if (!allowDeclareFields && node.declare) {
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| 85 | throw child.buildCodeFrameError(`The 'declare' modifier is only allowed when the ` + `'allowDeclareFields' option of ` + `@babel/plugin-transform-flow-strip-types or ` + `@babel/preset-flow is enabled.`);
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| 86 | }
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| 87 | }
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| 88 | if (node.declare) {
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| 89 | child.remove();
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| 90 | } else {
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| 91 | {
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| 92 | if (!allowDeclareFields && !node.value && !node.decorators) {
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| 93 | child.remove();
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| 94 | return;
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| 95 | }
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| 96 | }
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| 97 | node.variance = null;
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| 98 | node.typeAnnotation = null;
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| 99 | }
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| 100 | }
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| 101 | });
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| 102 | },
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| 103 | AssignmentPattern({
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| 104 | node
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| 105 | }) {
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| 106 | if (skipStrip) return;
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| 107 | if (node.left.optional) {
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| 108 | node.left.optional = false;
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| 109 | }
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| 110 | },
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| 111 | Function({
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| 112 | node
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| 113 | }) {
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| 114 | if (skipStrip) return;
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| 115 | if (node.params.length > 0 && node.params[0].type === "Identifier" && node.params[0].name === "this") {
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| 116 | node.params.shift();
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| 117 | }
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| 118 | for (let i = 0; i < node.params.length; i++) {
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| 119 | let param = node.params[i];
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| 120 | if (param.type === "AssignmentPattern") {
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| 121 | param = param.left;
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| 122 | }
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| 123 | if (param.optional) {
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| 124 | param.optional = false;
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| 125 | }
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| 126 | }
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| 127 | if (!_core.types.isMethod(node)) {
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| 128 | node.predicate = null;
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| 129 | }
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| 130 | },
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| 131 | TypeCastExpression(path) {
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| 132 | if (skipStrip) return;
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| 133 | let {
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| 134 | node
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| 135 | } = path;
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| 136 | do {
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| 137 | node = node.expression;
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| 138 | } while (_core.types.isTypeCastExpression(node));
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| 139 | path.replaceWith(node);
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| 140 | },
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| 141 | CallExpression({
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| 142 | node
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| 143 | }) {
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| 144 | if (skipStrip) return;
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| 145 | node.typeArguments = null;
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| 146 | },
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| 147 | OptionalCallExpression({
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| 148 | node
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| 149 | }) {
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| 150 | if (skipStrip) return;
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| 151 | node.typeArguments = null;
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| 152 | },
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| 153 | NewExpression({
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| 154 | node
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| 155 | }) {
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| 156 | if (skipStrip) return;
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| 157 | node.typeArguments = null;
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| 158 | }
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| 159 | }
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| 160 | };
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| 161 | });
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| 162 |
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| 163 |
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