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