291 lines
8.5 KiB
JavaScript
291 lines
8.5 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 Ivan Kopeykin @vankop
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*/
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"use strict";
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const WebpackError = require("../WebpackError");
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const {
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evaluateToIdentifier
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} = require("../javascript/JavascriptParserHelpers");
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const ImportMetaContextDependency = require("./ImportMetaContextDependency");
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/** @typedef {import("estree").Expression} Expression */
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/** @typedef {import("estree").ObjectExpression} ObjectExpression */
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/** @typedef {import("estree").Property} Property */
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/** @typedef {import("estree").SourceLocation} SourceLocation */
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/** @typedef {import("../javascript/JavascriptParser")} JavascriptParser */
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/** @typedef {import("../ContextModule").ContextModuleOptions} ContextModuleOptions */
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/** @typedef {import("../ChunkGroup").RawChunkGroupOptions} RawChunkGroupOptions */
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/** @typedef {Pick<ContextModuleOptions, 'mode'|'recursive'|'regExp'|'include'|'exclude'|'chunkName'>&{groupOptions: RawChunkGroupOptions, exports?: ContextModuleOptions["referencedExports"]}} ImportMetaContextOptions */
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/**
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* @param {TODO} prop property
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* @param {string} expect except message
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* @returns {WebpackError} error
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*/
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function createPropertyParseError(prop, expect) {
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return createError(
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`Parsing import.meta.webpackContext options failed. Unknown value for property ${JSON.stringify(
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prop.key.name
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)}, expected type ${expect}.`,
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prop.value.loc
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);
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}
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/**
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* @param {string} msg message
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* @param {SourceLocation} loc location
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* @returns {WebpackError} error
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*/
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function createError(msg, loc) {
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const error = new WebpackError(msg);
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error.name = "ImportMetaContextError";
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error.loc = loc;
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return error;
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}
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module.exports = class ImportMetaContextDependencyParserPlugin {
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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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parser.hooks.evaluateIdentifier
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.for("import.meta.webpackContext")
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.tap("ImportMetaContextDependencyParserPlugin", expr => {
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return evaluateToIdentifier(
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"import.meta.webpackContext",
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"import.meta",
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() => ["webpackContext"],
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true
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)(expr);
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});
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parser.hooks.call
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.for("import.meta.webpackContext")
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.tap("ImportMetaContextDependencyParserPlugin", expr => {
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if (expr.arguments.length < 1 || expr.arguments.length > 2) return;
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const [directoryNode, optionsNode] = expr.arguments;
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if (optionsNode && optionsNode.type !== "ObjectExpression") return;
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const requestExpr = parser.evaluateExpression(
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/** @type {Expression} */ (directoryNode)
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);
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if (!requestExpr.isString()) return;
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const request = requestExpr.string;
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const errors = [];
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let regExp = /^\.\/.*$/;
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let recursive = true;
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/** @type {ContextModuleOptions["mode"]} */
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let mode = "sync";
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/** @type {ContextModuleOptions["include"]} */
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let include;
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/** @type {ContextModuleOptions["exclude"]} */
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let exclude;
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/** @type {RawChunkGroupOptions} */
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const groupOptions = {};
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/** @type {ContextModuleOptions["chunkName"]} */
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let chunkName;
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/** @type {ContextModuleOptions["referencedExports"]} */
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let exports;
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if (optionsNode) {
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for (const prop of /** @type {ObjectExpression} */ (optionsNode)
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.properties) {
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if (prop.type !== "Property" || prop.key.type !== "Identifier") {
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errors.push(
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createError(
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"Parsing import.meta.webpackContext options failed.",
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optionsNode.loc
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)
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);
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break;
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}
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switch (prop.key.name) {
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case "regExp": {
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const regExpExpr = parser.evaluateExpression(
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/** @type {Expression} */ (prop.value)
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);
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if (!regExpExpr.isRegExp()) {
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errors.push(createPropertyParseError(prop, "RegExp"));
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} else {
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regExp = regExpExpr.regExp;
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}
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break;
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}
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case "include": {
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const regExpExpr = parser.evaluateExpression(
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/** @type {Expression} */ (prop.value)
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);
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if (!regExpExpr.isRegExp()) {
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errors.push(createPropertyParseError(prop, "RegExp"));
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} else {
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include = regExpExpr.regExp;
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}
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break;
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}
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case "exclude": {
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const regExpExpr = parser.evaluateExpression(
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/** @type {Expression} */ (prop.value)
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);
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if (!regExpExpr.isRegExp()) {
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errors.push(createPropertyParseError(prop, "RegExp"));
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} else {
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exclude = regExpExpr.regExp;
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}
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break;
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}
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case "mode": {
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const modeExpr = parser.evaluateExpression(
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/** @type {Expression} */ (prop.value)
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);
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if (!modeExpr.isString()) {
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errors.push(createPropertyParseError(prop, "string"));
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} else {
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mode = /** @type {ContextModuleOptions["mode"]} */ (
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modeExpr.string
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);
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}
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break;
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}
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case "chunkName": {
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const expr = parser.evaluateExpression(
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/** @type {Expression} */ (prop.value)
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);
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if (!expr.isString()) {
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errors.push(createPropertyParseError(prop, "string"));
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} else {
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chunkName = expr.string;
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}
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break;
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}
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case "exports": {
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const expr = parser.evaluateExpression(
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/** @type {Expression} */ (prop.value)
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);
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if (expr.isString()) {
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exports = [[expr.string]];
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} else if (expr.isArray()) {
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const items = expr.items;
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if (
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items.every(i => {
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if (!i.isArray()) return false;
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const innerItems = i.items;
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return innerItems.every(i => i.isString());
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})
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) {
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exports = [];
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for (const i1 of items) {
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const export_ = [];
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for (const i2 of i1.items) {
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export_.push(i2.string);
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}
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exports.push(export_);
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}
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} else {
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errors.push(
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createPropertyParseError(prop, "string|string[][]")
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);
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}
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} else {
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errors.push(
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createPropertyParseError(prop, "string|string[][]")
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);
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}
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break;
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}
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case "prefetch": {
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const expr = parser.evaluateExpression(
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/** @type {Expression} */ (prop.value)
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);
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if (expr.isBoolean()) {
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groupOptions.prefetchOrder = 0;
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} else if (expr.isNumber()) {
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groupOptions.prefetchOrder = expr.number;
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} else {
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errors.push(createPropertyParseError(prop, "boolean|number"));
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}
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break;
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}
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case "preload": {
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const expr = parser.evaluateExpression(
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/** @type {Expression} */ (prop.value)
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);
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if (expr.isBoolean()) {
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groupOptions.preloadOrder = 0;
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} else if (expr.isNumber()) {
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groupOptions.preloadOrder = expr.number;
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} else {
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errors.push(createPropertyParseError(prop, "boolean|number"));
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}
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break;
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}
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case "fetchPriority": {
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const expr = parser.evaluateExpression(
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/** @type {Expression} */ (prop.value)
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);
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if (
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expr.isString() &&
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["high", "low", "auto"].includes(expr.string)
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) {
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groupOptions.fetchPriority =
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/** @type {RawChunkGroupOptions["fetchPriority"]} */ (
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expr.string
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);
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} else {
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errors.push(
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createPropertyParseError(prop, '"high"|"low"|"auto"')
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);
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}
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break;
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}
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case "recursive": {
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const recursiveExpr = parser.evaluateExpression(
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/** @type {Expression} */ (prop.value)
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);
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if (!recursiveExpr.isBoolean()) {
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errors.push(createPropertyParseError(prop, "boolean"));
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} else {
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recursive = recursiveExpr.bool;
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}
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break;
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}
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default:
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errors.push(
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createError(
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`Parsing import.meta.webpackContext options failed. Unknown property ${JSON.stringify(
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prop.key.name
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)}.`,
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optionsNode.loc
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)
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);
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}
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}
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}
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if (errors.length) {
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for (const error of errors) parser.state.current.addError(error);
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return;
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}
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const dep = new ImportMetaContextDependency(
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{
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request,
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include,
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exclude,
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recursive,
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regExp,
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groupOptions,
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chunkName,
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referencedExports: exports,
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mode,
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category: "esm"
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},
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expr.range
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);
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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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};
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