1 files changed, 371 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..d0e195e0
--- /dev/null
+++ b/node_modules/webpack/lib/dependencies/HarmonyImportDependencyParserPlugin.js
@@ -0,0 +1,371 @@
+/*
+	MIT License http://www.opensource.org/licenses/mit-license.php
+	Author Tobias Koppers @sokra
+*/
+
+"use strict";
+
+const HotModuleReplacementPlugin = require("../HotModuleReplacementPlugin");
+const InnerGraph = require("../optimize/InnerGraph");
+const ConstDependency = require("./ConstDependency");
+const HarmonyAcceptDependency = require("./HarmonyAcceptDependency");
+const HarmonyAcceptImportDependency = require("./HarmonyAcceptImportDependency");
+const HarmonyEvaluatedImportSpecifierDependency = require("./HarmonyEvaluatedImportSpecifierDependency");
+const HarmonyExports = require("./HarmonyExports");
+const { ExportPresenceModes } = require("./HarmonyImportDependency");
+const HarmonyImportSideEffectDependency = require("./HarmonyImportSideEffectDependency");
+const HarmonyImportSpecifierDependency = require("./HarmonyImportSpecifierDependency");
+
+/** @typedef {import("estree").ExportAllDeclaration} ExportAllDeclaration */
+/** @typedef {import("estree").ExportNamedDeclaration} ExportNamedDeclaration */
+/** @typedef {import("estree").Identifier} Identifier */
+/** @typedef {import("estree").ImportDeclaration} ImportDeclaration */
+/** @typedef {import("estree").ImportExpression} ImportExpression */
+/** @typedef {import("estree").MemberExpression} MemberExpression */
+/** @typedef {import("../../declarations/WebpackOptions").JavascriptParserOptions} JavascriptParserOptions */
+/** @typedef {import("../Dependency").DependencyLocation} DependencyLocation */
+/** @typedef {import("../javascript/BasicEvaluatedExpression")} BasicEvaluatedExpression */
+/** @typedef {import("../javascript/JavascriptParser")} JavascriptParser */
+/** @typedef {import("../javascript/JavascriptParser").Range} Range */
+/** @typedef {import("../optimize/InnerGraph").InnerGraph} InnerGraph */
+/** @typedef {import("../optimize/InnerGraph").TopLevelSymbol} TopLevelSymbol */
+/** @typedef {import("./HarmonyImportDependency")} HarmonyImportDependency */
+
+const harmonySpecifierTag = Symbol("harmony import");
+
+/**
+ * @typedef {Object} HarmonySettings
+ * @property {string[]} ids
+ * @property {string} source
+ * @property {number} sourceOrder
+ * @property {string} name
+ * @property {boolean} await
+ * @property {Record<string, any> | undefined} assertions
+ */
+
+/**
+ * @param {ImportDeclaration | ExportNamedDeclaration | ExportAllDeclaration | ImportExpression} node node with assertions
+ * @returns {Record<string, any> | undefined} assertions
+ */
+function getAssertions(node) {
+	// TODO remove cast when @types/estree has been updated to import assertions
+	const assertions = /** @type {{ assertions?: ImportAttributeNode[] }} */ (
+		node
+	).assertions;
+	if (assertions === undefined) {
+		return undefined;
+	}
+	const result = {};
+	for (const assertion of assertions) {
+		const key =
+			assertion.key.type === "Identifier"
+				? assertion.key.name
+				: assertion.key.value;
+		result[key] = assertion.value.value;
+	}
+	return result;
+}
+
+module.exports = class HarmonyImportDependencyParserPlugin {
+	/**
+	 * @param {JavascriptParserOptions} options options
+	 */
+	constructor(options) {
+		this.exportPresenceMode =
+			options.importExportsPresence !== undefined
+				? ExportPresenceModes.fromUserOption(options.importExportsPresence)
+				: options.exportsPresence !== undefined
+				? ExportPresenceModes.fromUserOption(options.exportsPresence)
+				: options.strictExportPresence
+				? ExportPresenceModes.ERROR
+				: ExportPresenceModes.AUTO;
+		this.strictThisContextOnImports = options.strictThisContextOnImports;
+	}
+
+	/**
+	 * @param {JavascriptParser} parser the parser
+	 * @returns {void}
+	 */
+	apply(parser) {
+		const { exportPresenceMode } = this;
+
+		function getNonOptionalPart(members, membersOptionals) {
+			let i = 0;
+			while (i < members.length && membersOptionals[i] === false) i++;
+			return i !== members.length ? members.slice(0, i) : members;
+		}
+
+		function getNonOptionalMemberChain(node, count) {
+			while (count--) node = node.object;
+			return node;
+		}
+
+		parser.hooks.isPure
+			.for("Identifier")
+			.tap("HarmonyImportDependencyParserPlugin", expression => {
+				const expr = /** @type {Identifier} */ (expression);
+				if (
+					parser.isVariableDefined(expr.name) ||
+					parser.getTagData(expr.name, harmonySpecifierTag)
+				) {
+					return true;
+				}
+			});
+		parser.hooks.import.tap(
+			"HarmonyImportDependencyParserPlugin",
+			(statement, source) => {
+				parser.state.lastHarmonyImportOrder =
+					(parser.state.lastHarmonyImportOrder || 0) + 1;
+				const clearDep = new ConstDependency(
+					parser.isAsiPosition(/** @type {Range} */ (statement.range)[0])
+						? ";"
+						: "",
+					/** @type {Range} */ (statement.range)
+				);
+				clearDep.loc = /** @type {DependencyLocation} */ (statement.loc);
+				parser.state.module.addPresentationalDependency(clearDep);
+				parser.unsetAsiPosition(/** @type {Range} */ (statement.range)[1]);
+				const assertions = getAssertions(statement);
+				const sideEffectDep = new HarmonyImportSideEffectDependency(
+					source,
+					parser.state.lastHarmonyImportOrder,
+					assertions
+				);
+				sideEffectDep.loc = /** @type {DependencyLocation} */ (statement.loc);
+				parser.state.module.addDependency(sideEffectDep);
+				return true;
+			}
+		);
+		parser.hooks.importSpecifier.tap(
+			"HarmonyImportDependencyParserPlugin",
+			(statement, source, id, name) => {
+				const ids = id === null ? [] : [id];
+				parser.tagVariable(name, harmonySpecifierTag, {
+					name,
+					source,
+					ids,
+					sourceOrder: parser.state.lastHarmonyImportOrder,
+					assertions: getAssertions(statement)
+				});
+				return true;
+			}
+		);
+		parser.hooks.binaryExpression.tap(
+			"HarmonyImportDependencyParserPlugin",
+			expression => {
+				if (expression.operator !== "in") return;
+
+				const leftPartEvaluated = parser.evaluateExpression(expression.left);
+				if (leftPartEvaluated.couldHaveSideEffects()) return;
+				const leftPart = leftPartEvaluated.asString();
+				if (!leftPart) return;
+
+				const rightPart = parser.evaluateExpression(expression.right);
+				if (!rightPart.isIdentifier()) return;
+
+				const rootInfo = rightPart.rootInfo;
+				if (
+					typeof rootInfo === "string" ||
+					!rootInfo ||
+					!rootInfo.tagInfo ||
+					rootInfo.tagInfo.tag !== harmonySpecifierTag
+				)
+					return;
+				const settings = rootInfo.tagInfo.data;
+				const members = rightPart.getMembers();
+				const dep = new HarmonyEvaluatedImportSpecifierDependency(
+					settings.source,
+					settings.sourceOrder,
+					settings.ids.concat(members).concat([leftPart]),
+					settings.name,
+					/** @type {Range} */ (expression.range),
+					settings.assertions,
+					"in"
+				);
+				dep.directImport = members.length === 0;
+				dep.asiSafe = !parser.isAsiPosition(
+					/** @type {Range} */ (expression.range)[0]
+				);
+				dep.loc = /** @type {DependencyLocation} */ (expression.loc);
+				parser.state.module.addDependency(dep);
+				InnerGraph.onUsage(parser.state, e => (dep.usedByExports = e));
+				return true;
+			}
+		);
+		parser.hooks.expression
+			.for(harmonySpecifierTag)
+			.tap("HarmonyImportDependencyParserPlugin", expr => {
+				const settings = /** @type {HarmonySettings} */ (parser.currentTagData);
+				const dep = new HarmonyImportSpecifierDependency(
+					settings.source,
+					settings.sourceOrder,
+					settings.ids,
+					settings.name,
+					/** @type {Range} */ (expr.range),
+					exportPresenceMode,
+					settings.assertions,
+					[]
+				);
+				dep.referencedPropertiesInDestructuring =
+					parser.destructuringAssignmentPropertiesFor(expr);
+				dep.shorthand = parser.scope.inShorthand;
+				dep.directImport = true;
+				dep.asiSafe = !parser.isAsiPosition(
+					/** @type {Range} */ (expr.range)[0]
+				);
+				dep.loc = /** @type {DependencyLocation} */ (expr.loc);
+				dep.call = parser.scope.inTaggedTemplateTag;
+				parser.state.module.addDependency(dep);
+				InnerGraph.onUsage(parser.state, e => (dep.usedByExports = e));
+				return true;
+			});
+		parser.hooks.expressionMemberChain
+			.for(harmonySpecifierTag)
+			.tap(
+				"HarmonyImportDependencyParserPlugin",
+				(expression, members, membersOptionals, memberRanges) => {
+					const settings = /** @type {HarmonySettings} */ (
+						parser.currentTagData
+					);
+					const nonOptionalMembers = getNonOptionalPart(
+						members,
+						membersOptionals
+					);
+					const ranges = memberRanges.slice(
+						0,
+						memberRanges.length - (members.length - nonOptionalMembers.length)
+					);
+					const expr =
+						nonOptionalMembers !== members
+							? getNonOptionalMemberChain(
+									expression,
+									members.length - nonOptionalMembers.length
+							  )
+							: expression;
+					const ids = settings.ids.concat(nonOptionalMembers);
+					const dep = new HarmonyImportSpecifierDependency(
+						settings.source,
+						settings.sourceOrder,
+						ids,
+						settings.name,
+						/** @type {Range} */ (expr.range),
+						exportPresenceMode,
+						settings.assertions,
+						ranges
+					);
+					dep.referencedPropertiesInDestructuring =
+						parser.destructuringAssignmentPropertiesFor(expr);
+					dep.asiSafe = !parser.isAsiPosition(
+						/** @type {Range} */ (expr.range)[0]
+					);
+					dep.loc = /** @type {DependencyLocation} */ (expr.loc);
+					parser.state.module.addDependency(dep);
+					InnerGraph.onUsage(parser.state, e => (dep.usedByExports = e));
+					return true;
+				}
+			);
+		parser.hooks.callMemberChain
+			.for(harmonySpecifierTag)
+			.tap(
+				"HarmonyImportDependencyParserPlugin",
+				(expression, members, membersOptionals, memberRanges) => {
+					const { arguments: args, callee } = expression;
+					const settings = /** @type {HarmonySettings} */ (
+						parser.currentTagData
+					);
+					const nonOptionalMembers = getNonOptionalPart(
+						members,
+						membersOptionals
+					);
+					const ranges = memberRanges.slice(
+						0,
+						memberRanges.length - (members.length - nonOptionalMembers.length)
+					);
+					const expr =
+						nonOptionalMembers !== members
+							? getNonOptionalMemberChain(
+									callee,
+									members.length - nonOptionalMembers.length
+							  )
+							: callee;
+					const ids = settings.ids.concat(nonOptionalMembers);
+					const dep = new HarmonyImportSpecifierDependency(
+						settings.source,
+						settings.sourceOrder,
+						ids,
+						settings.name,
+						/** @type {Range} */ (expr.range),
+						exportPresenceMode,
+						settings.assertions,
+						ranges
+					);
+					dep.directImport = members.length === 0;
+					dep.call = true;
+					dep.asiSafe = !parser.isAsiPosition(
+						/** @type {Range} */ (expr.range)[0]
+					);
+					// only in case when we strictly follow the spec we need a special case here
+					dep.namespaceObjectAsContext =
+						members.length > 0 && this.strictThisContextOnImports;
+					dep.loc = /** @type {DependencyLocation} */ (expr.loc);
+					parser.state.module.addDependency(dep);
+					if (args) parser.walkExpressions(args);
+					InnerGraph.onUsage(parser.state, e => (dep.usedByExports = e));
+					return true;
+				}
+			);
+		const { hotAcceptCallback, hotAcceptWithoutCallback } =
+			HotModuleReplacementPlugin.getParserHooks(parser);
+		hotAcceptCallback.tap(
+			"HarmonyImportDependencyParserPlugin",
+			(expr, requests) => {
+				if (!HarmonyExports.isEnabled(parser.state)) {
+					// This is not a harmony module, skip it
+					return;
+				}
+				const dependencies = requests.map(request => {
+					const dep = new HarmonyAcceptImportDependency(request);
+					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);
+				}
+			}
+		);
+		hotAcceptWithoutCallback.tap(
+			"HarmonyImportDependencyParserPlugin",
+			(expr, requests) => {
+				if (!HarmonyExports.isEnabled(parser.state)) {
+					// This is not a harmony module, skip it
+					return;
+				}
+				const dependencies = requests.map(request => {
+					const dep = new HarmonyAcceptImportDependency(request);
+					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);
+				}
+			}
+		);
+	}
+};
+
+module.exports.harmonySpecifierTag = harmonySpecifierTag;
+module.exports.getAssertions = getAssertions;