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- "use strict";
- const {
- JAVASCRIPT_MODULE_TYPE_AUTO,
- JAVASCRIPT_MODULE_TYPE_DYNAMIC,
- JAVASCRIPT_MODULE_TYPE_ESM
- } = require("./ModuleTypeConstants");
- const ConstDependency = require("./dependencies/ConstDependency");
- const PLUGIN_NAME = "UseStrictPlugin";
- class UseStrictPlugin {
-
- apply(compiler) {
- compiler.hooks.compilation.tap(
- PLUGIN_NAME,
- (compilation, { normalModuleFactory }) => {
-
- const handler = (parser, parserOptions) => {
- parser.hooks.program.tap(PLUGIN_NAME, ast => {
- const firstNode = ast.body[0];
- if (
- firstNode &&
- firstNode.type === "ExpressionStatement" &&
- firstNode.expression.type === "Literal" &&
- firstNode.expression.value === "use strict"
- ) {
-
-
-
- const dep = new ConstDependency(
- "",
- (firstNode.range)
- );
- dep.loc = (firstNode.loc);
- parser.state.module.addPresentationalDependency(dep);
-
- (parser.state.module.buildInfo).strict = true;
- }
- if (parserOptions.overrideStrict) {
-
- (parser.state.module.buildInfo).strict =
- parserOptions.overrideStrict === "strict";
- }
- });
- };
- normalModuleFactory.hooks.parser
- .for(JAVASCRIPT_MODULE_TYPE_AUTO)
- .tap(PLUGIN_NAME, handler);
- normalModuleFactory.hooks.parser
- .for(JAVASCRIPT_MODULE_TYPE_DYNAMIC)
- .tap(PLUGIN_NAME, handler);
- normalModuleFactory.hooks.parser
- .for(JAVASCRIPT_MODULE_TYPE_ESM)
- .tap(PLUGIN_NAME, handler);
- }
- );
- }
- }
- module.exports = UseStrictPlugin;
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