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- "use strict";
- Object.defineProperty(exports, "__esModule", {
- value: true
- });
- exports.default = void 0;
- exports.getExportSpecifierName = getExportSpecifierName;
- var _helperPluginUtils = require("@babel/helper-plugin-utils");
- var _helperHoistVariables = require("@babel/helper-hoist-variables");
- var _core = require("@babel/core");
- var _utils = require("babel-plugin-dynamic-import-node/utils");
- var _helperModuleTransforms = require("@babel/helper-module-transforms");
- var _helperValidatorIdentifier = require("@babel/helper-validator-identifier");
- const buildTemplate = _core.template.statement(`
- SYSTEM_REGISTER(MODULE_NAME, SOURCES, function (EXPORT_IDENTIFIER, CONTEXT_IDENTIFIER) {
- "use strict";
- BEFORE_BODY;
- return {
- setters: SETTERS,
- execute: EXECUTE,
- };
- });
- `);
- const buildExportAll = _core.template.statement(`
- for (var KEY in TARGET) {
- if (KEY !== "default" && KEY !== "__esModule") EXPORT_OBJ[KEY] = TARGET[KEY];
- }
- `);
- const MISSING_PLUGIN_WARNING = `\
- WARNING: Dynamic import() transformation must be enabled using the
- @babel/plugin-proposal-dynamic-import plugin. Babel 8 will
- no longer transform import() without using that plugin.
- `;
- const MISSING_PLUGIN_ERROR = `\
- ERROR: Dynamic import() transformation must be enabled using the
- @babel/plugin-proposal-dynamic-import plugin. Babel 8
- no longer transforms import() without using that plugin.
- `;
- function getExportSpecifierName(node, stringSpecifiers) {
- if (node.type === "Identifier") {
- return node.name;
- } else if (node.type === "StringLiteral") {
- const stringValue = node.value;
- if (!(0, _helperValidatorIdentifier.isIdentifierName)(stringValue)) {
- stringSpecifiers.add(stringValue);
- }
- return stringValue;
- } else {
- throw new Error(`Expected export specifier to be either Identifier or StringLiteral, got ${node.type}`);
- }
- }
- function constructExportCall(path, exportIdent, exportNames, exportValues, exportStarTarget, stringSpecifiers) {
- const statements = [];
- if (!exportStarTarget) {
- if (exportNames.length === 1) {
- statements.push(_core.types.expressionStatement(_core.types.callExpression(exportIdent, [_core.types.stringLiteral(exportNames[0]), exportValues[0]])));
- } else {
- const objectProperties = [];
- for (let i = 0; i < exportNames.length; i++) {
- const exportName = exportNames[i];
- const exportValue = exportValues[i];
- objectProperties.push(_core.types.objectProperty(stringSpecifiers.has(exportName) ? _core.types.stringLiteral(exportName) : _core.types.identifier(exportName), exportValue));
- }
- statements.push(_core.types.expressionStatement(_core.types.callExpression(exportIdent, [_core.types.objectExpression(objectProperties)])));
- }
- } else {
- const exportObj = path.scope.generateUid("exportObj");
- statements.push(_core.types.variableDeclaration("var", [_core.types.variableDeclarator(_core.types.identifier(exportObj), _core.types.objectExpression([]))]));
- statements.push(buildExportAll({
- KEY: path.scope.generateUidIdentifier("key"),
- EXPORT_OBJ: _core.types.identifier(exportObj),
- TARGET: exportStarTarget
- }));
- for (let i = 0; i < exportNames.length; i++) {
- const exportName = exportNames[i];
- const exportValue = exportValues[i];
- statements.push(_core.types.expressionStatement(_core.types.assignmentExpression("=", _core.types.memberExpression(_core.types.identifier(exportObj), _core.types.identifier(exportName)), exportValue)));
- }
- statements.push(_core.types.expressionStatement(_core.types.callExpression(exportIdent, [_core.types.identifier(exportObj)])));
- }
- return statements;
- }
- var _default = (0, _helperPluginUtils.declare)((api, options) => {
- api.assertVersion(7);
- const {
- systemGlobal = "System",
- allowTopLevelThis = false
- } = options;
- const reassignmentVisited = new WeakSet();
- const reassignmentVisitor = {
- "AssignmentExpression|UpdateExpression"(path) {
- if (reassignmentVisited.has(path.node)) return;
- reassignmentVisited.add(path.node);
- const arg = path.isAssignmentExpression() ? path.get("left") : path.get("argument");
- if (arg.isObjectPattern() || arg.isArrayPattern()) {
- const exprs = [path.node];
- for (const name of Object.keys(arg.getBindingIdentifiers())) {
- if (this.scope.getBinding(name) !== path.scope.getBinding(name)) {
- return;
- }
- const exportedNames = this.exports[name];
- if (!exportedNames) continue;
- for (const exportedName of exportedNames) {
- exprs.push(this.buildCall(exportedName, _core.types.identifier(name)).expression);
- }
- }
- path.replaceWith(_core.types.sequenceExpression(exprs));
- return;
- }
- if (!arg.isIdentifier()) return;
- const name = arg.node.name;
- if (this.scope.getBinding(name) !== path.scope.getBinding(name)) return;
- const exportedNames = this.exports[name];
- if (!exportedNames) return;
- let node = path.node;
- const isPostUpdateExpression = _core.types.isUpdateExpression(node, {
- prefix: false
- });
- if (isPostUpdateExpression) {
- node = _core.types.binaryExpression(node.operator[0], _core.types.unaryExpression("+", _core.types.cloneNode(node.argument)), _core.types.numericLiteral(1));
- }
- for (const exportedName of exportedNames) {
- node = this.buildCall(exportedName, node).expression;
- }
- if (isPostUpdateExpression) {
- node = _core.types.sequenceExpression([node, path.node]);
- }
- path.replaceWith(node);
- }
- };
- return {
- name: "transform-modules-systemjs",
- pre() {
- this.file.set("@babel/plugin-transform-modules-*", "systemjs");
- },
- visitor: {
- CallExpression(path, state) {
- if (_core.types.isImport(path.node.callee)) {
- if (!this.file.has("@babel/plugin-proposal-dynamic-import")) {
- {
- console.warn(MISSING_PLUGIN_WARNING);
- }
- }
- path.replaceWith(_core.types.callExpression(_core.types.memberExpression(_core.types.identifier(state.contextIdent), _core.types.identifier("import")), [(0, _utils.getImportSource)(_core.types, path.node)]));
- }
- },
- MetaProperty(path, state) {
- if (path.node.meta.name === "import" && path.node.property.name === "meta") {
- path.replaceWith(_core.types.memberExpression(_core.types.identifier(state.contextIdent), _core.types.identifier("meta")));
- }
- },
- ReferencedIdentifier(path, state) {
- if (path.node.name === "__moduleName" && !path.scope.hasBinding("__moduleName")) {
- path.replaceWith(_core.types.memberExpression(_core.types.identifier(state.contextIdent), _core.types.identifier("id")));
- }
- },
- Program: {
- enter(path, state) {
- state.contextIdent = path.scope.generateUid("context");
- state.stringSpecifiers = new Set();
- if (!allowTopLevelThis) {
- (0, _helperModuleTransforms.rewriteThis)(path);
- }
- },
- exit(path, state) {
- const scope = path.scope;
- const exportIdent = scope.generateUid("export");
- const {
- contextIdent,
- stringSpecifiers
- } = state;
- const exportMap = Object.create(null);
- const modules = [];
- const beforeBody = [];
- const setters = [];
- const sources = [];
- const variableIds = [];
- const removedPaths = [];
- function addExportName(key, val) {
- exportMap[key] = exportMap[key] || [];
- exportMap[key].push(val);
- }
- function pushModule(source, key, specifiers) {
- let module;
- modules.forEach(function (m) {
- if (m.key === source) {
- module = m;
- }
- });
- if (!module) {
- modules.push(module = {
- key: source,
- imports: [],
- exports: []
- });
- }
- module[key] = module[key].concat(specifiers);
- }
- function buildExportCall(name, val) {
- return _core.types.expressionStatement(_core.types.callExpression(_core.types.identifier(exportIdent), [_core.types.stringLiteral(name), val]));
- }
- const exportNames = [];
- const exportValues = [];
- const body = path.get("body");
- for (const path of body) {
- if (path.isFunctionDeclaration()) {
- beforeBody.push(path.node);
- removedPaths.push(path);
- } else if (path.isClassDeclaration()) {
- variableIds.push(_core.types.cloneNode(path.node.id));
- path.replaceWith(_core.types.expressionStatement(_core.types.assignmentExpression("=", _core.types.cloneNode(path.node.id), _core.types.toExpression(path.node))));
- } else if (path.isVariableDeclaration()) {
- path.node.kind = "var";
- } else if (path.isImportDeclaration()) {
- const source = path.node.source.value;
- pushModule(source, "imports", path.node.specifiers);
- for (const name of Object.keys(path.getBindingIdentifiers())) {
- scope.removeBinding(name);
- variableIds.push(_core.types.identifier(name));
- }
- path.remove();
- } else if (path.isExportAllDeclaration()) {
- pushModule(path.node.source.value, "exports", path.node);
- path.remove();
- } else if (path.isExportDefaultDeclaration()) {
- const declar = path.get("declaration");
- if (declar.isClassDeclaration()) {
- const id = declar.node.id;
- if (id) {
- exportNames.push("default");
- exportValues.push(scope.buildUndefinedNode());
- variableIds.push(_core.types.cloneNode(id));
- addExportName(id.name, "default");
- path.replaceWith(_core.types.expressionStatement(_core.types.assignmentExpression("=", _core.types.cloneNode(id), _core.types.toExpression(declar.node))));
- } else {
- exportNames.push("default");
- exportValues.push(_core.types.toExpression(declar.node));
- removedPaths.push(path);
- }
- } else if (declar.isFunctionDeclaration()) {
- const id = declar.node.id;
- if (id) {
- beforeBody.push(declar.node);
- exportNames.push("default");
- exportValues.push(_core.types.cloneNode(id));
- addExportName(id.name, "default");
- } else {
- exportNames.push("default");
- exportValues.push(_core.types.toExpression(declar.node));
- }
- removedPaths.push(path);
- } else {
- path.replaceWith(buildExportCall("default", declar.node));
- }
- } else if (path.isExportNamedDeclaration()) {
- const declar = path.get("declaration");
- if (declar.node) {
- path.replaceWith(declar);
- if (declar.isFunction()) {
- const node = declar.node;
- const name = node.id.name;
- addExportName(name, name);
- beforeBody.push(node);
- exportNames.push(name);
- exportValues.push(_core.types.cloneNode(node.id));
- removedPaths.push(path);
- } else if (declar.isClass()) {
- const name = declar.node.id.name;
- exportNames.push(name);
- exportValues.push(scope.buildUndefinedNode());
- variableIds.push(_core.types.cloneNode(declar.node.id));
- path.replaceWith(_core.types.expressionStatement(_core.types.assignmentExpression("=", _core.types.cloneNode(declar.node.id), _core.types.toExpression(declar.node))));
- addExportName(name, name);
- } else {
- if (declar.isVariableDeclaration()) {
- declar.node.kind = "var";
- }
- for (const name of Object.keys(declar.getBindingIdentifiers())) {
- addExportName(name, name);
- }
- }
- } else {
- const specifiers = path.node.specifiers;
- if (specifiers != null && specifiers.length) {
- if (path.node.source) {
- pushModule(path.node.source.value, "exports", specifiers);
- path.remove();
- } else {
- const nodes = [];
- for (const specifier of specifiers) {
- const {
- local,
- exported
- } = specifier;
- const binding = scope.getBinding(local.name);
- const exportedName = getExportSpecifierName(exported, stringSpecifiers);
- if (binding && _core.types.isFunctionDeclaration(binding.path.node)) {
- exportNames.push(exportedName);
- exportValues.push(_core.types.cloneNode(local));
- } else if (!binding) {
- nodes.push(buildExportCall(exportedName, local));
- }
- addExportName(local.name, exportedName);
- }
- path.replaceWithMultiple(nodes);
- }
- } else {
- path.remove();
- }
- }
- }
- }
- modules.forEach(function (specifiers) {
- const setterBody = [];
- const target = scope.generateUid(specifiers.key);
- for (let specifier of specifiers.imports) {
- if (_core.types.isImportNamespaceSpecifier(specifier)) {
- setterBody.push(_core.types.expressionStatement(_core.types.assignmentExpression("=", specifier.local, _core.types.identifier(target))));
- } else if (_core.types.isImportDefaultSpecifier(specifier)) {
- specifier = _core.types.importSpecifier(specifier.local, _core.types.identifier("default"));
- }
- if (_core.types.isImportSpecifier(specifier)) {
- const {
- imported
- } = specifier;
- setterBody.push(_core.types.expressionStatement(_core.types.assignmentExpression("=", specifier.local, _core.types.memberExpression(_core.types.identifier(target), specifier.imported, imported.type === "StringLiteral"))));
- }
- }
- if (specifiers.exports.length) {
- const exportNames = [];
- const exportValues = [];
- let hasExportStar = false;
- for (const node of specifiers.exports) {
- if (_core.types.isExportAllDeclaration(node)) {
- hasExportStar = true;
- } else if (_core.types.isExportSpecifier(node)) {
- const exportedName = getExportSpecifierName(node.exported, stringSpecifiers);
- exportNames.push(exportedName);
- exportValues.push(_core.types.memberExpression(_core.types.identifier(target), node.local, _core.types.isStringLiteral(node.local)));
- } else {}
- }
- setterBody.push(...constructExportCall(path, _core.types.identifier(exportIdent), exportNames, exportValues, hasExportStar ? _core.types.identifier(target) : null, stringSpecifiers));
- }
- sources.push(_core.types.stringLiteral(specifiers.key));
- setters.push(_core.types.functionExpression(null, [_core.types.identifier(target)], _core.types.blockStatement(setterBody)));
- });
- let moduleName = (0, _helperModuleTransforms.getModuleName)(this.file.opts, options);
- if (moduleName) moduleName = _core.types.stringLiteral(moduleName);
- (0, _helperHoistVariables.default)(path, (id, name, hasInit) => {
- variableIds.push(id);
- if (!hasInit && name in exportMap) {
- for (const exported of exportMap[name]) {
- exportNames.push(exported);
- exportValues.push(scope.buildUndefinedNode());
- }
- }
- });
- if (variableIds.length) {
- beforeBody.unshift(_core.types.variableDeclaration("var", variableIds.map(id => _core.types.variableDeclarator(id))));
- }
- if (exportNames.length) {
- beforeBody.push(...constructExportCall(path, _core.types.identifier(exportIdent), exportNames, exportValues, null, stringSpecifiers));
- }
- path.traverse(reassignmentVisitor, {
- exports: exportMap,
- buildCall: buildExportCall,
- scope
- });
- for (const path of removedPaths) {
- path.remove();
- }
- let hasTLA = false;
- path.traverse({
- AwaitExpression(path) {
- hasTLA = true;
- path.stop();
- },
- Function(path) {
- path.skip();
- },
- noScope: true
- });
- path.node.body = [buildTemplate({
- SYSTEM_REGISTER: _core.types.memberExpression(_core.types.identifier(systemGlobal), _core.types.identifier("register")),
- BEFORE_BODY: beforeBody,
- MODULE_NAME: moduleName,
- SETTERS: _core.types.arrayExpression(setters),
- EXECUTE: _core.types.functionExpression(null, [], _core.types.blockStatement(path.node.body), false, hasTLA),
- SOURCES: _core.types.arrayExpression(sources),
- EXPORT_IDENTIFIER: _core.types.identifier(exportIdent),
- CONTEXT_IDENTIFIER: _core.types.identifier(contextIdent)
- })];
- }
- }
- }
- };
- });
- exports.default = _default;
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