1 files changed, 222 insertions, 0 deletions
diff --git a/node_modules/webpack/lib/dependencies/HarmonyImportDependencyParserPlugin.js b/node_modules/webpack/lib/dependencies/HarmonyImportDependencyParserPlugin.js
new file mode 100644
index 00000000..7f9fcde2
--- /dev/null
+++ b/node_modules/webpack/lib/dependencies/HarmonyImportDependencyParserPlugin.js
@@ -0,0 +1,222 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+"use strict";
+
+const { SyncBailHook } = require("tapable");
+const HarmonyImportSideEffectDependency = require("./HarmonyImportSideEffectDependency");
+const HarmonyImportSpecifierDependency = require("./HarmonyImportSpecifierDependency");
+const HarmonyAcceptImportDependency = require("./HarmonyAcceptImportDependency");
+const HarmonyAcceptDependency = require("./HarmonyAcceptDependency");
+const ConstDependency = require("./ConstDependency");
+
+module.exports = class HarmonyImportDependencyParserPlugin {
+	constructor(moduleOptions) {
+		this.strictExportPresence = moduleOptions.strictExportPresence;
+		this.strictThisContextOnImports = moduleOptions.strictThisContextOnImports;
+	}
+
+	apply(parser) {
+		parser.hooks.import.tap(
+			"HarmonyImportDependencyParserPlugin",
+			(statement, source) => {
+				parser.state.lastHarmonyImportOrder =
+					(parser.state.lastHarmonyImportOrder || 0) + 1;
+				const clearDep = new ConstDependency("", statement.range);
+				clearDep.loc = statement.loc;
+				parser.state.module.addDependency(clearDep);
+				const sideEffectDep = new HarmonyImportSideEffectDependency(
+					source,
+					parser.state.module,
+					parser.state.lastHarmonyImportOrder,
+					parser.state.harmonyParserScope
+				);
+				sideEffectDep.loc = statement.loc;
+				parser.state.module.addDependency(sideEffectDep);
+				return true;
+			}
+		);
+		parser.hooks.importSpecifier.tap(
+			"HarmonyImportDependencyParserPlugin",
+			(statement, source, id, name) => {
+				parser.scope.definitions.delete(name);
+				parser.scope.renames.set(name, "imported var");
+				if (!parser.state.harmonySpecifier) {
+					parser.state.harmonySpecifier = new Map();
+				}
+				parser.state.harmonySpecifier.set(name, {
+					source,
+					id,
+					sourceOrder: parser.state.lastHarmonyImportOrder
+				});
+				return true;
+			}
+		);
+		parser.hooks.expression
+			.for("imported var")
+			.tap("HarmonyImportDependencyParserPlugin", expr => {
+				const name = expr.name;
+				const settings = parser.state.harmonySpecifier.get(name);
+				const dep = new HarmonyImportSpecifierDependency(
+					settings.source,
+					parser.state.module,
+					settings.sourceOrder,
+					parser.state.harmonyParserScope,
+					settings.id,
+					name,
+					expr.range,
+					this.strictExportPresence
+				);
+				dep.shorthand = parser.scope.inShorthand;
+				dep.directImport = true;
+				dep.loc = expr.loc;
+				parser.state.module.addDependency(dep);
+				return true;
+			});
+		parser.hooks.expressionAnyMember
+			.for("imported var")
+			.tap("HarmonyImportDependencyParserPlugin", expr => {
+				const name = expr.object.name;
+				const settings = parser.state.harmonySpecifier.get(name);
+				if (settings.id !== null) return false;
+				const dep = new HarmonyImportSpecifierDependency(
+					settings.source,
+					parser.state.module,
+					settings.sourceOrder,
+					parser.state.harmonyParserScope,
+					expr.property.name || expr.property.value,
+					name,
+					expr.range,
+					this.strictExportPresence
+				);
+				dep.shorthand = parser.scope.inShorthand;
+				dep.directImport = false;
+				dep.loc = expr.loc;
+				parser.state.module.addDependency(dep);
+				return true;
+			});
+		if (this.strictThisContextOnImports) {
+			// only in case when we strictly follow the spec we need a special case here
+			parser.hooks.callAnyMember
+				.for("imported var")
+				.tap("HarmonyImportDependencyParserPlugin", expr => {
+					if (expr.callee.type !== "MemberExpression") return;
+					if (expr.callee.object.type !== "Identifier") return;
+					const name = expr.callee.object.name;
+					const settings = parser.state.harmonySpecifier.get(name);
+					if (settings.id !== null) return false;
+					const dep = new HarmonyImportSpecifierDependency(
+						settings.source,
+						parser.state.module,
+						settings.sourceOrder,
+						parser.state.harmonyParserScope,
+						expr.callee.property.name || expr.callee.property.value,
+						name,
+						expr.callee.range,
+						this.strictExportPresence
+					);
+					dep.shorthand = parser.scope.inShorthand;
+					dep.directImport = false;
+					dep.namespaceObjectAsContext = true;
+					dep.loc = expr.callee.loc;
+					parser.state.module.addDependency(dep);
+					if (expr.arguments) parser.walkExpressions(expr.arguments);
+					return true;
+				});
+		}
+		parser.hooks.call
+			.for("imported var")
+			.tap("HarmonyImportDependencyParserPlugin", expr => {
+				const args = expr.arguments;
+				const fullExpr = expr;
+				expr = expr.callee;
+				if (expr.type !== "Identifier") return;
+				const name = expr.name;
+				const settings = parser.state.harmonySpecifier.get(name);
+				const dep = new HarmonyImportSpecifierDependency(
+					settings.source,
+					parser.state.module,
+					settings.sourceOrder,
+					parser.state.harmonyParserScope,
+					settings.id,
+					name,
+					expr.range,
+					this.strictExportPresence
+				);
+				dep.directImport = true;
+				dep.callArgs = args;
+				dep.call = fullExpr;
+				dep.loc = expr.loc;
+				parser.state.module.addDependency(dep);
+				if (args) parser.walkExpressions(args);
+				return true;
+			});
+		// TODO webpack 5: refactor this, no custom hooks
+		if (!parser.hooks.hotAcceptCallback) {
+			parser.hooks.hotAcceptCallback = new SyncBailHook([
+				"expression",
+				"requests"
+			]);
+		}
+		if (!parser.hooks.hotAcceptWithoutCallback) {
+			parser.hooks.hotAcceptWithoutCallback = new SyncBailHook([
+				"expression",
+				"requests"
+			]);
+		}
+		parser.hooks.hotAcceptCallback.tap(
+			"HarmonyImportDependencyParserPlugin",
+			(expr, requests) => {
+				const harmonyParserScope = parser.state.harmonyParserScope;
+				if (!harmonyParserScope) {
+					// This is not a harmony module, skip it
+					return;
+				}
+				const dependencies = requests.map(request => {
+					const dep = new HarmonyAcceptImportDependency(
+						request,
+						parser.state.module,
+						harmonyParserScope
+					);
+					dep.loc = expr.loc;
+					parser.state.module.addDependency(dep);
+					return dep;
+				});
+				if (dependencies.length > 0) {
+					const dep = new HarmonyAcceptDependency(
+						expr.range,
+						dependencies,
+						true
+					);
+					dep.loc = expr.loc;
+					parser.state.module.addDependency(dep);
+				}
+			}
+		);
+		parser.hooks.hotAcceptWithoutCallback.tap(
+			"HarmonyImportDependencyParserPlugin",
+			(expr, requests) => {
+				const dependencies = requests.map(request => {
+					const dep = new HarmonyAcceptImportDependency(
+						request,
+						parser.state.module,
+						parser.state.harmonyParserScope
+					);
+					dep.loc = expr.loc;
+					parser.state.module.addDependency(dep);
+					return dep;
+				});
+				if (dependencies.length > 0) {
+					const dep = new HarmonyAcceptDependency(
+						expr.range,
+						dependencies,
+						false
+					);
+					dep.loc = expr.loc;
+					parser.state.module.addDependency(dep);
+				}
+			}
+		);
+	}
+};