[6a3a178] | 1 | /*
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| 2 | MIT License http://www.opensource.org/licenses/mit-license.php
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| 3 | Author Tobias Koppers @sokra
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| 4 | */
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| 5 |
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| 6 | "use strict";
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| 7 |
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| 8 | const HotModuleReplacementPlugin = require("../HotModuleReplacementPlugin");
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| 9 | const InnerGraph = require("../optimize/InnerGraph");
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| 10 | const ConstDependency = require("./ConstDependency");
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| 11 | const HarmonyAcceptDependency = require("./HarmonyAcceptDependency");
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| 12 | const HarmonyAcceptImportDependency = require("./HarmonyAcceptImportDependency");
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| 13 | const HarmonyExports = require("./HarmonyExports");
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| 14 | const HarmonyImportSideEffectDependency = require("./HarmonyImportSideEffectDependency");
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| 15 | const HarmonyImportSpecifierDependency = require("./HarmonyImportSpecifierDependency");
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| 16 |
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| 17 | /** @typedef {import("estree").ExportAllDeclaration} ExportAllDeclaration */
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| 18 | /** @typedef {import("estree").ExportNamedDeclaration} ExportNamedDeclaration */
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| 19 | /** @typedef {import("estree").Identifier} Identifier */
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| 20 | /** @typedef {import("estree").ImportDeclaration} ImportDeclaration */
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| 21 | /** @typedef {import("estree").ImportExpression} ImportExpression */
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| 22 | /** @typedef {import("../javascript/JavascriptParser")} JavascriptParser */
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| 23 | /** @typedef {import("../optimize/InnerGraph").InnerGraph} InnerGraph */
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| 24 | /** @typedef {import("../optimize/InnerGraph").TopLevelSymbol} TopLevelSymbol */
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| 25 | /** @typedef {import("./HarmonyImportDependency")} HarmonyImportDependency */
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| 26 |
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| 27 | const harmonySpecifierTag = Symbol("harmony import");
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| 28 |
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| 29 | /**
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| 30 | * @typedef {Object} HarmonySettings
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| 31 | * @property {string[]} ids
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| 32 | * @property {string} source
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| 33 | * @property {number} sourceOrder
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| 34 | * @property {string} name
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| 35 | * @property {boolean} await
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| 36 | * @property {Record<string, any> | undefined} assertions
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| 37 | */
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| 38 |
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| 39 | /**
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| 40 | * @param {ImportDeclaration | ExportNamedDeclaration | ExportAllDeclaration | ImportExpression} node node with assertions
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| 41 | * @returns {Record<string, any> | undefined} assertions
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| 42 | */
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| 43 | function getAssertions(node) {
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| 44 | // TODO remove cast when @types/estree has been updated to import assertions
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| 45 | const assertions = /** @type {{ assertions?: ImportAttributeNode[] }} */ (
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| 46 | node
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| 47 | ).assertions;
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| 48 | if (assertions === undefined) {
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| 49 | return undefined;
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| 50 | }
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| 51 | const result = {};
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| 52 | for (const assertion of assertions) {
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| 53 | const key =
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| 54 | assertion.key.type === "Identifier"
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| 55 | ? assertion.key.name
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| 56 | : assertion.key.value;
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| 57 | result[key] = assertion.value.value;
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| 58 | }
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| 59 | return result;
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| 60 | }
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| 61 |
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| 62 | module.exports = class HarmonyImportDependencyParserPlugin {
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| 63 | constructor(options) {
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| 64 | this.strictExportPresence = options.strictExportPresence;
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| 65 | this.strictThisContextOnImports = options.strictThisContextOnImports;
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| 66 | }
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| 67 |
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| 68 | /**
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| 69 | * @param {JavascriptParser} parser the parser
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| 70 | * @returns {void}
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| 71 | */
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| 72 | apply(parser) {
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| 73 | parser.hooks.isPure
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| 74 | .for("Identifier")
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| 75 | .tap("HarmonyImportDependencyParserPlugin", expression => {
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| 76 | const expr = /** @type {Identifier} */ (expression);
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| 77 | if (
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| 78 | parser.isVariableDefined(expr.name) ||
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| 79 | parser.getTagData(expr.name, harmonySpecifierTag)
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| 80 | ) {
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| 81 | return true;
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| 82 | }
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| 83 | });
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| 84 | parser.hooks.import.tap(
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| 85 | "HarmonyImportDependencyParserPlugin",
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| 86 | (statement, source) => {
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| 87 | parser.state.lastHarmonyImportOrder =
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| 88 | (parser.state.lastHarmonyImportOrder || 0) + 1;
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| 89 | const clearDep = new ConstDependency(
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| 90 | parser.isAsiPosition(statement.range[0]) ? ";" : "",
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| 91 | statement.range
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| 92 | );
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| 93 | clearDep.loc = statement.loc;
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| 94 | parser.state.module.addPresentationalDependency(clearDep);
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| 95 | parser.unsetAsiPosition(statement.range[1]);
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| 96 | const assertions = getAssertions(statement);
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| 97 | const sideEffectDep = new HarmonyImportSideEffectDependency(
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| 98 | source,
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| 99 | parser.state.lastHarmonyImportOrder,
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| 100 | assertions
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| 101 | );
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| 102 | sideEffectDep.loc = statement.loc;
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| 103 | parser.state.module.addDependency(sideEffectDep);
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| 104 | return true;
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| 105 | }
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| 106 | );
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| 107 | parser.hooks.importSpecifier.tap(
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| 108 | "HarmonyImportDependencyParserPlugin",
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| 109 | (statement, source, id, name) => {
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| 110 | const ids = id === null ? [] : [id];
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| 111 | parser.tagVariable(name, harmonySpecifierTag, {
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| 112 | name,
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| 113 | source,
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| 114 | ids,
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| 115 | sourceOrder: parser.state.lastHarmonyImportOrder,
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| 116 | assertions: getAssertions(statement)
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| 117 | });
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| 118 | return true;
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| 119 | }
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| 120 | );
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| 121 | parser.hooks.expression
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| 122 | .for(harmonySpecifierTag)
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| 123 | .tap("HarmonyImportDependencyParserPlugin", expr => {
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| 124 | const settings = /** @type {HarmonySettings} */ (parser.currentTagData);
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| 125 | const dep = new HarmonyImportSpecifierDependency(
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| 126 | settings.source,
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| 127 | settings.sourceOrder,
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| 128 | settings.ids,
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| 129 | settings.name,
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| 130 | expr.range,
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| 131 | this.strictExportPresence,
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| 132 | settings.assertions
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| 133 | );
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| 134 | dep.shorthand = parser.scope.inShorthand;
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| 135 | dep.directImport = true;
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| 136 | dep.asiSafe = !parser.isAsiPosition(expr.range[0]);
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| 137 | dep.loc = expr.loc;
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| 138 | parser.state.module.addDependency(dep);
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| 139 | InnerGraph.onUsage(parser.state, e => (dep.usedByExports = e));
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| 140 | return true;
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| 141 | });
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| 142 | parser.hooks.expressionMemberChain
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| 143 | .for(harmonySpecifierTag)
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| 144 | .tap("HarmonyImportDependencyParserPlugin", (expr, members) => {
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| 145 | const settings = /** @type {HarmonySettings} */ (parser.currentTagData);
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| 146 | const ids = settings.ids.concat(members);
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| 147 | const dep = new HarmonyImportSpecifierDependency(
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| 148 | settings.source,
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| 149 | settings.sourceOrder,
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| 150 | ids,
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| 151 | settings.name,
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| 152 | expr.range,
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| 153 | this.strictExportPresence,
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| 154 | settings.assertions
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| 155 | );
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| 156 | dep.asiSafe = !parser.isAsiPosition(expr.range[0]);
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| 157 | dep.loc = expr.loc;
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| 158 | parser.state.module.addDependency(dep);
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| 159 | InnerGraph.onUsage(parser.state, e => (dep.usedByExports = e));
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| 160 | return true;
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| 161 | });
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| 162 | parser.hooks.callMemberChain
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| 163 | .for(harmonySpecifierTag)
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| 164 | .tap("HarmonyImportDependencyParserPlugin", (expr, members) => {
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| 165 | const { arguments: args, callee } = expr;
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| 166 | const settings = /** @type {HarmonySettings} */ (parser.currentTagData);
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| 167 | const ids = settings.ids.concat(members);
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| 168 | const dep = new HarmonyImportSpecifierDependency(
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| 169 | settings.source,
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| 170 | settings.sourceOrder,
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| 171 | ids,
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| 172 | settings.name,
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| 173 | callee.range,
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| 174 | this.strictExportPresence,
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| 175 | settings.assertions
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| 176 | );
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| 177 | dep.directImport = members.length === 0;
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| 178 | dep.call = true;
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| 179 | dep.asiSafe = !parser.isAsiPosition(callee.range[0]);
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| 180 | // only in case when we strictly follow the spec we need a special case here
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| 181 | dep.namespaceObjectAsContext =
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| 182 | members.length > 0 && this.strictThisContextOnImports;
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| 183 | dep.loc = callee.loc;
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| 184 | parser.state.module.addDependency(dep);
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| 185 | if (args) parser.walkExpressions(args);
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| 186 | InnerGraph.onUsage(parser.state, e => (dep.usedByExports = e));
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| 187 | return true;
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| 188 | });
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| 189 | const { hotAcceptCallback, hotAcceptWithoutCallback } =
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| 190 | HotModuleReplacementPlugin.getParserHooks(parser);
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| 191 | hotAcceptCallback.tap(
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| 192 | "HarmonyImportDependencyParserPlugin",
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| 193 | (expr, requests) => {
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| 194 | if (!HarmonyExports.isEnabled(parser.state)) {
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| 195 | // This is not a harmony module, skip it
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| 196 | return;
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| 197 | }
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| 198 | const dependencies = requests.map(request => {
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| 199 | const dep = new HarmonyAcceptImportDependency(request);
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| 200 | dep.loc = expr.loc;
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| 201 | parser.state.module.addDependency(dep);
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| 202 | return dep;
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| 203 | });
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| 204 | if (dependencies.length > 0) {
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| 205 | const dep = new HarmonyAcceptDependency(
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| 206 | expr.range,
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| 207 | dependencies,
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| 208 | true
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| 209 | );
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| 210 | dep.loc = expr.loc;
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| 211 | parser.state.module.addDependency(dep);
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| 212 | }
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| 213 | }
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| 214 | );
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| 215 | hotAcceptWithoutCallback.tap(
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| 216 | "HarmonyImportDependencyParserPlugin",
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| 217 | (expr, requests) => {
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| 218 | if (!HarmonyExports.isEnabled(parser.state)) {
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| 219 | // This is not a harmony module, skip it
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| 220 | return;
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| 221 | }
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| 222 | const dependencies = requests.map(request => {
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| 223 | const dep = new HarmonyAcceptImportDependency(request);
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| 224 | dep.loc = expr.loc;
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| 225 | parser.state.module.addDependency(dep);
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| 226 | return dep;
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| 227 | });
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| 228 | if (dependencies.length > 0) {
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| 229 | const dep = new HarmonyAcceptDependency(
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| 230 | expr.range,
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| 231 | dependencies,
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| 232 | false
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| 233 | );
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| 234 | dep.loc = expr.loc;
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| 235 | parser.state.module.addDependency(dep);
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| 236 | }
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| 237 | }
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| 238 | );
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| 239 | }
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| 240 | };
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| 241 |
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| 242 | module.exports.harmonySpecifierTag = harmonySpecifierTag;
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| 243 | module.exports.getAssertions = getAssertions;
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