332 lines
10 KiB
JavaScript
332 lines
10 KiB
JavaScript
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/*
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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 AsyncDependenciesBlock = require("../AsyncDependenciesBlock");
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const CommentCompilationWarning = require("../CommentCompilationWarning");
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const UnsupportedFeatureWarning = require("../UnsupportedFeatureWarning");
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const ContextDependencyHelpers = require("./ContextDependencyHelpers");
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const ImportContextDependency = require("./ImportContextDependency");
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const ImportDependency = require("./ImportDependency");
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const ImportEagerDependency = require("./ImportEagerDependency");
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const ImportWeakDependency = require("./ImportWeakDependency");
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/** @typedef {import("../../declarations/WebpackOptions").JavascriptParserOptions} JavascriptParserOptions */
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/** @typedef {import("../ChunkGroup").RawChunkGroupOptions} RawChunkGroupOptions */
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/** @typedef {import("../ContextModule").ContextMode} ContextMode */
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/** @typedef {import("../Dependency").DependencyLocation} DependencyLocation */
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/** @typedef {import("../Module").BuildMeta} BuildMeta */
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/** @typedef {import("../javascript/JavascriptParser")} JavascriptParser */
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/** @typedef {import("../javascript/JavascriptParser").Range} Range */
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class ImportParserPlugin {
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/**
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* @param {JavascriptParserOptions} options options
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*/
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constructor(options) {
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this.options = options;
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}
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/**
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* @param {JavascriptParser} parser the parser
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* @returns {void}
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*/
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apply(parser) {
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/**
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* @template T
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* @param {Iterable<T>} enumerable enumerable
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* @returns {T[][]} array of array
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*/
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const exportsFromEnumerable = enumerable =>
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Array.from(enumerable, e => [e]);
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parser.hooks.importCall.tap("ImportParserPlugin", expr => {
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const param = parser.evaluateExpression(expr.source);
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let chunkName = null;
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let mode = /** @type {ContextMode} */ (this.options.dynamicImportMode);
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let include = null;
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let exclude = null;
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/** @type {string[][] | null} */
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let exports = null;
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/** @type {RawChunkGroupOptions} */
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const groupOptions = {};
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const {
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dynamicImportPreload,
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dynamicImportPrefetch,
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dynamicImportFetchPriority
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} = this.options;
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if (dynamicImportPreload !== undefined && dynamicImportPreload !== false)
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groupOptions.preloadOrder =
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dynamicImportPreload === true ? 0 : dynamicImportPreload;
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if (
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dynamicImportPrefetch !== undefined &&
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dynamicImportPrefetch !== false
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)
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groupOptions.prefetchOrder =
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dynamicImportPrefetch === true ? 0 : dynamicImportPrefetch;
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if (
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dynamicImportFetchPriority !== undefined &&
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dynamicImportFetchPriority !== false
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)
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groupOptions.fetchPriority = dynamicImportFetchPriority;
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const { options: importOptions, errors: commentErrors } =
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parser.parseCommentOptions(/** @type {Range} */ (expr.range));
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if (commentErrors) {
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for (const e of commentErrors) {
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const { comment } = e;
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parser.state.module.addWarning(
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new CommentCompilationWarning(
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`Compilation error while processing magic comment(-s): /*${comment.value}*/: ${e.message}`,
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comment.loc
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)
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);
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}
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}
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if (importOptions) {
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if (importOptions.webpackIgnore !== undefined) {
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if (typeof importOptions.webpackIgnore !== "boolean") {
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parser.state.module.addWarning(
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new UnsupportedFeatureWarning(
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`\`webpackIgnore\` expected a boolean, but received: ${importOptions.webpackIgnore}.`,
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/** @type {DependencyLocation} */ (expr.loc)
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)
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);
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} else {
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// Do not instrument `import()` if `webpackIgnore` is `true`
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if (importOptions.webpackIgnore) {
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return false;
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}
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}
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}
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if (importOptions.webpackChunkName !== undefined) {
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if (typeof importOptions.webpackChunkName !== "string") {
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parser.state.module.addWarning(
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new UnsupportedFeatureWarning(
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`\`webpackChunkName\` expected a string, but received: ${importOptions.webpackChunkName}.`,
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/** @type {DependencyLocation} */ (expr.loc)
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)
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);
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} else {
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chunkName = importOptions.webpackChunkName;
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}
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}
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if (importOptions.webpackMode !== undefined) {
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if (typeof importOptions.webpackMode !== "string") {
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parser.state.module.addWarning(
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new UnsupportedFeatureWarning(
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`\`webpackMode\` expected a string, but received: ${importOptions.webpackMode}.`,
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/** @type {DependencyLocation} */ (expr.loc)
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)
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);
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} else {
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mode = importOptions.webpackMode;
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}
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}
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if (importOptions.webpackPrefetch !== undefined) {
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if (importOptions.webpackPrefetch === true) {
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groupOptions.prefetchOrder = 0;
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} else if (typeof importOptions.webpackPrefetch === "number") {
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groupOptions.prefetchOrder = importOptions.webpackPrefetch;
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} else {
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parser.state.module.addWarning(
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new UnsupportedFeatureWarning(
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`\`webpackPrefetch\` expected true or a number, but received: ${importOptions.webpackPrefetch}.`,
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/** @type {DependencyLocation} */ (expr.loc)
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)
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);
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}
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}
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if (importOptions.webpackPreload !== undefined) {
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if (importOptions.webpackPreload === true) {
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groupOptions.preloadOrder = 0;
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} else if (typeof importOptions.webpackPreload === "number") {
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groupOptions.preloadOrder = importOptions.webpackPreload;
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} else {
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parser.state.module.addWarning(
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new UnsupportedFeatureWarning(
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`\`webpackPreload\` expected true or a number, but received: ${importOptions.webpackPreload}.`,
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/** @type {DependencyLocation} */ (expr.loc)
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)
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);
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}
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}
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if (importOptions.webpackFetchPriority !== undefined) {
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if (
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typeof importOptions.webpackFetchPriority === "string" &&
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["high", "low", "auto"].includes(importOptions.webpackFetchPriority)
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) {
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groupOptions.fetchPriority = importOptions.webpackFetchPriority;
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} else {
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parser.state.module.addWarning(
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new UnsupportedFeatureWarning(
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`\`webpackFetchPriority\` expected true or "low", "high" or "auto", but received: ${importOptions.webpackFetchPriority}.`,
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/** @type {DependencyLocation} */ (expr.loc)
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)
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);
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}
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}
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if (importOptions.webpackInclude !== undefined) {
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if (
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!importOptions.webpackInclude ||
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!(importOptions.webpackInclude instanceof RegExp)
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) {
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parser.state.module.addWarning(
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new UnsupportedFeatureWarning(
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`\`webpackInclude\` expected a regular expression, but received: ${importOptions.webpackInclude}.`,
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/** @type {DependencyLocation} */ (expr.loc)
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)
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);
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} else {
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include = importOptions.webpackInclude;
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}
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}
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if (importOptions.webpackExclude !== undefined) {
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if (
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!importOptions.webpackExclude ||
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!(importOptions.webpackExclude instanceof RegExp)
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) {
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parser.state.module.addWarning(
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new UnsupportedFeatureWarning(
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`\`webpackExclude\` expected a regular expression, but received: ${importOptions.webpackExclude}.`,
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/** @type {DependencyLocation} */ (expr.loc)
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)
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);
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} else {
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exclude = importOptions.webpackExclude;
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}
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}
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if (importOptions.webpackExports !== undefined) {
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if (
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!(
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typeof importOptions.webpackExports === "string" ||
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(Array.isArray(importOptions.webpackExports) &&
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/** @type {string[]} */ (importOptions.webpackExports).every(
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item => typeof item === "string"
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))
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)
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) {
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parser.state.module.addWarning(
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new UnsupportedFeatureWarning(
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`\`webpackExports\` expected a string or an array of strings, but received: ${importOptions.webpackExports}.`,
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/** @type {DependencyLocation} */ (expr.loc)
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)
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);
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} else {
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if (typeof importOptions.webpackExports === "string") {
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exports = [[importOptions.webpackExports]];
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} else {
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exports = exportsFromEnumerable(importOptions.webpackExports);
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}
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}
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}
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}
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if (
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mode !== "lazy" &&
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mode !== "lazy-once" &&
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mode !== "eager" &&
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mode !== "weak"
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) {
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parser.state.module.addWarning(
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new UnsupportedFeatureWarning(
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`\`webpackMode\` expected 'lazy', 'lazy-once', 'eager' or 'weak', but received: ${mode}.`,
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/** @type {DependencyLocation} */ (expr.loc)
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)
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);
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mode = "lazy";
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}
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const referencedPropertiesInDestructuring =
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parser.destructuringAssignmentPropertiesFor(expr);
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if (referencedPropertiesInDestructuring) {
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if (exports) {
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parser.state.module.addWarning(
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new UnsupportedFeatureWarning(
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`\`webpackExports\` could not be used with destructuring assignment.`,
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/** @type {DependencyLocation} */ (expr.loc)
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)
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);
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}
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exports = exportsFromEnumerable(referencedPropertiesInDestructuring);
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}
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if (param.isString()) {
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if (mode === "eager") {
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const dep = new ImportEagerDependency(
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/** @type {string} */ (param.string),
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/** @type {Range} */ (expr.range),
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exports
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);
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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(
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/** @type {string} */ (param.string),
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/** @type {Range} */ (expr.range),
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exports
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);
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parser.state.current.addDependency(dep);
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} else {
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const depBlock = new AsyncDependenciesBlock(
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{
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...groupOptions,
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name: chunkName
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},
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/** @type {DependencyLocation} */ (expr.loc),
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param.string
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);
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const dep = new ImportDependency(
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/** @type {string} */ (param.string),
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/** @type {Range} */ (expr.range),
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exports
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);
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dep.loc = /** @type {DependencyLocation} */ (expr.loc);
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depBlock.addDependency(dep);
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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 === "weak") {
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mode = "async-weak";
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}
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const dep = ContextDependencyHelpers.create(
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ImportContextDependency,
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/** @type {Range} */ (expr.range),
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param,
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expr,
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this.options,
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{
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chunkName,
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groupOptions,
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include,
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exclude,
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mode,
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namespaceObject: /** @type {BuildMeta} */ (
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parser.state.module.buildMeta
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).strictHarmonyModule
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? "strict"
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: true,
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typePrefix: "import()",
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category: "esm",
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referencedExports: exports
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},
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parser
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);
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if (!dep) return;
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dep.loc = /** @type {DependencyLocation} */ (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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}
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}
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module.exports = ImportParserPlugin;
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