mirror of https://github.com/webpack/webpack.git
107 lines
4.3 KiB
JavaScript
107 lines
4.3 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const ImportContextDependency = require("./ImportContextDependency");
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const ImportWeakDependency = require("./ImportWeakDependency");
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const ImportDependenciesBlock = require("./ImportDependenciesBlock");
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const ImportEagerDependency = require("./ImportEagerDependency");
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const ContextDependencyHelpers = require("./ContextDependencyHelpers");
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const UnsupportedFeatureWarning = require("../UnsupportedFeatureWarning");
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class ImportParserPlugin {
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constructor(options) {
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this.options = options;
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}
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apply(parser) {
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const options = this.options;
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const handler = (expr) => {
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if(expr.arguments.length !== 1)
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throw new Error("Incorrect number of arguments provided to 'import(module: string) -> Promise'.");
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const param = parser.evaluateExpression(expr.arguments[0]);
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let chunkName = null;
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let mode = "lazy";
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let include = null;
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let exclude = null;
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const importOptions = parser.getCommentOptions(expr.range);
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if(importOptions) {
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if(typeof importOptions.webpackChunkName !== "undefined") {
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if(typeof importOptions.webpackChunkName !== "string")
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parser.state.module.warnings.push(new UnsupportedFeatureWarning(parser.state.module, `\`webpackChunkName\` expected a string, but received: ${importOptions.webpackChunkName}.`));
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else
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chunkName = importOptions.webpackChunkName;
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}
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if(typeof importOptions.webpackMode !== "undefined") {
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if(typeof importOptions.webpackMode !== "string")
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parser.state.module.warnings.push(new UnsupportedFeatureWarning(parser.state.module, `\`webpackMode\` expected a string, but received: ${importOptions.webpackMode}.`));
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else
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mode = importOptions.webpackMode;
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}
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if(typeof importOptions.webpackInclude !== "undefined") {
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if(!importOptions.webpackInclude || importOptions.webpackInclude.constructor.name !== "RegExp") {
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parser.state.module.warnings.push(new UnsupportedFeatureWarning(parser.state.module, `\`webpackInclude\` expected a regular expression, but received: ${importOptions.webpackInclude}.`));
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} else {
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include = new RegExp(importOptions.webpackInclude);
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}
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}
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if(typeof importOptions.webpackExclude !== "undefined") {
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if(!importOptions.webpackExclude || importOptions.webpackExclude.constructor.name !== "RegExp") {
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parser.state.module.warnings.push(new UnsupportedFeatureWarning(parser.state.module, `\`webpackExclude\` expected a regular expression, but received: ${importOptions.webpackExclude}.`));
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} else {
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exclude = new RegExp(importOptions.webpackExclude);
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}
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}
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}
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if(param.isString()) {
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if(mode !== "lazy" && mode !== "eager" && mode !== "weak") {
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parser.state.module.warnings.push(new UnsupportedFeatureWarning(parser.state.module, `\`webpackMode\` expected 'lazy', 'eager' or 'weak', but received: ${mode}.`));
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}
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if(mode === "eager") {
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const dep = new ImportEagerDependency(param.string, expr.range);
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parser.state.current.addDependency(dep);
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} else if(mode === "weak") {
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const dep = new ImportWeakDependency(param.string, expr.range);
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parser.state.current.addDependency(dep);
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} else {
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const depBlock = new ImportDependenciesBlock(param.string, expr.range, chunkName, parser.state.module, expr.loc, parser.state.module);
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parser.state.current.addBlock(depBlock);
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}
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return true;
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} else {
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if(mode !== "lazy" && mode !== "lazy-once" && mode !== "eager" && mode !== "weak") {
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parser.state.module.warnings.push(new UnsupportedFeatureWarning(parser.state.module, `\`webpackMode\` expected 'lazy', 'lazy-once', 'eager' or 'weak', but received: ${mode}.`));
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mode = "lazy";
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}
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if(mode === "weak") {
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mode = "async-weak";
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}
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const dep = ContextDependencyHelpers.create(ImportContextDependency, expr.range, param, expr, options, {
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chunkName,
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include,
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exclude,
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mode,
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namespaceObject: parser.state.module.buildMeta.strictHarmonyModule ? "strict" : true
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});
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if(!dep) return;
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dep.loc = expr.loc;
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dep.optional = !!parser.scope.inTry;
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parser.state.current.addDependency(dep);
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return true;
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}
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};
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parser.hooks.call.for("System.import").tap("ImportParserPlugin", handler);
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parser.hooks.importCall.tap("ImportParserPlugin", handler);
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}
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}
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module.exports = ImportParserPlugin;
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