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248 lines
7.0 KiB
248 lines
7.0 KiB
/*
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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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const CommentCompilationWarning = require("../CommentCompilationWarning");
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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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parser.hooks.importCall.tap("ImportParserPlugin", expr => {
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if (expr.arguments.length !== 1) {
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throw new Error(
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"Incorrect number of arguments provided to 'import(module: string) -> Promise'."
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);
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}
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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 groupOptions = {};
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const {
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options: importOptions,
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errors: commentErrors
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} = parser.parseCommentOptions(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.warnings.push(
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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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parser.state.module,
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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.warnings.push(
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new UnsupportedFeatureWarning(
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parser.state.module,
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`\`webpackIgnore\` expected a boolean, but received: ${importOptions.webpackIgnore}.`,
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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.warnings.push(
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new UnsupportedFeatureWarning(
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parser.state.module,
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`\`webpackChunkName\` expected a string, but received: ${importOptions.webpackChunkName}.`,
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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.warnings.push(
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new UnsupportedFeatureWarning(
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parser.state.module,
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`\`webpackMode\` expected a string, but received: ${importOptions.webpackMode}.`,
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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.warnings.push(
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new UnsupportedFeatureWarning(
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parser.state.module,
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`\`webpackPrefetch\` expected true or a number, but received: ${importOptions.webpackPrefetch}.`,
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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.warnings.push(
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new UnsupportedFeatureWarning(
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parser.state.module,
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`\`webpackPreload\` expected true or a number, but received: ${importOptions.webpackPreload}.`,
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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.constructor.name !== "RegExp"
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) {
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parser.state.module.warnings.push(
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new UnsupportedFeatureWarning(
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parser.state.module,
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`\`webpackInclude\` expected a regular expression, but received: ${importOptions.webpackInclude}.`,
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expr.loc
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)
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);
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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 (importOptions.webpackExclude !== undefined) {
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if (
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!importOptions.webpackExclude ||
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importOptions.webpackExclude.constructor.name !== "RegExp"
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) {
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parser.state.module.warnings.push(
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new UnsupportedFeatureWarning(
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parser.state.module,
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`\`webpackExclude\` expected a regular expression, but received: ${importOptions.webpackExclude}.`,
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expr.loc
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)
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);
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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(
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new UnsupportedFeatureWarning(
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parser.state.module,
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`\`webpackMode\` expected 'lazy', 'eager' or 'weak', but received: ${mode}.`,
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expr.loc
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)
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);
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}
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if (mode === "eager") {
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const dep = new ImportEagerDependency(
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param.string,
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parser.state.module,
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expr.range
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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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param.string,
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parser.state.module,
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expr.range
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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 ImportDependenciesBlock(
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param.string,
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expr.range,
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Object.assign(groupOptions, {
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name: chunkName
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}),
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parser.state.module,
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expr.loc,
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parser.state.module
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);
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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 (
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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.warnings.push(
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new UnsupportedFeatureWarning(
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parser.state.module,
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`\`webpackMode\` expected 'lazy', 'lazy-once', 'eager' or 'weak', but received: ${mode}.`,
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expr.loc
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)
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);
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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(
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ImportContextDependency,
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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: parser.state.module.buildMeta.strictHarmonyModule
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? "strict"
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: true
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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 = 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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