保誠-保戶業務員媒合平台
HelenHuang
2022-06-09 9bdb95c9e34cef640534e5e5a1e2225a80442000
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/*
    MIT License http://www.opensource.org/licenses/mit-license.php
    Author Tobias Koppers @sokra
*/
"use strict";
 
const HarmonyCompatibilityDependency = require("./HarmonyCompatibilityDependency");
const HarmonyInitDependency = require("./HarmonyInitDependency");
 
module.exports = class HarmonyDetectionParserPlugin {
    apply(parser) {
        parser.hooks.program.tap("HarmonyDetectionParserPlugin", ast => {
            const isStrictHarmony = parser.state.module.type === "javascript/esm";
            const isHarmony =
                isStrictHarmony ||
                ast.body.some(
                    statement =>
                        statement.type === "ImportDeclaration" ||
                        statement.type === "ExportDefaultDeclaration" ||
                        statement.type === "ExportNamedDeclaration" ||
                        statement.type === "ExportAllDeclaration"
                );
            if (isHarmony) {
                const module = parser.state.module;
                const compatDep = new HarmonyCompatibilityDependency(module);
                compatDep.loc = {
                    start: {
                        line: -1,
                        column: 0
                    },
                    end: {
                        line: -1,
                        column: 0
                    },
                    index: -3
                };
                module.addDependency(compatDep);
                const initDep = new HarmonyInitDependency(module);
                initDep.loc = {
                    start: {
                        line: -1,
                        column: 0
                    },
                    end: {
                        line: -1,
                        column: 0
                    },
                    index: -2
                };
                module.addDependency(initDep);
                parser.state.harmonyParserScope = parser.state.harmonyParserScope || {};
                parser.scope.isStrict = true;
                module.buildMeta.exportsType = "namespace";
                module.buildInfo.strict = true;
                module.buildInfo.exportsArgument = "__webpack_exports__";
                if (isStrictHarmony) {
                    module.buildMeta.strictHarmonyModule = true;
                    module.buildInfo.moduleArgument = "__webpack_module__";
                }
            }
        });
 
        const skipInHarmony = () => {
            const module = parser.state.module;
            if (module && module.buildMeta && module.buildMeta.exportsType) {
                return true;
            }
        };
 
        const nullInHarmony = () => {
            const module = parser.state.module;
            if (module && module.buildMeta && module.buildMeta.exportsType) {
                return null;
            }
        };
 
        const nonHarmonyIdentifiers = ["define", "exports"];
        for (const identifer of nonHarmonyIdentifiers) {
            parser.hooks.evaluateTypeof
                .for(identifer)
                .tap("HarmonyDetectionParserPlugin", nullInHarmony);
            parser.hooks.typeof
                .for(identifer)
                .tap("HarmonyDetectionParserPlugin", skipInHarmony);
            parser.hooks.evaluate
                .for(identifer)
                .tap("HarmonyDetectionParserPlugin", nullInHarmony);
            parser.hooks.expression
                .for(identifer)
                .tap("HarmonyDetectionParserPlugin", skipInHarmony);
            parser.hooks.call
                .for(identifer)
                .tap("HarmonyDetectionParserPlugin", skipInHarmony);
        }
    }
};