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424 lines
12 KiB
424 lines
12 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.buildNamespaceInitStatements = buildNamespaceInitStatements; |
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exports.ensureStatementsHoisted = ensureStatementsHoisted; |
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Object.defineProperty(exports, "getModuleName", { |
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enumerable: true, |
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get: function () { |
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return _getModuleName.default; |
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} |
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}); |
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Object.defineProperty(exports, "hasExports", { |
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enumerable: true, |
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get: function () { |
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return _normalizeAndLoadMetadata.hasExports; |
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} |
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}); |
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Object.defineProperty(exports, "isModule", { |
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enumerable: true, |
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get: function () { |
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return _helperModuleImports.isModule; |
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} |
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}); |
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Object.defineProperty(exports, "isSideEffectImport", { |
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enumerable: true, |
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get: function () { |
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return _normalizeAndLoadMetadata.isSideEffectImport; |
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} |
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}); |
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exports.rewriteModuleStatementsAndPrepareHeader = rewriteModuleStatementsAndPrepareHeader; |
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Object.defineProperty(exports, "rewriteThis", { |
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enumerable: true, |
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get: function () { |
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return _rewriteThis.default; |
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} |
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}); |
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exports.wrapInterop = wrapInterop; |
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var _assert = require("assert"); |
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var _t = require("@babel/types"); |
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var _template = require("@babel/template"); |
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var _helperModuleImports = require("@babel/helper-module-imports"); |
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var _rewriteThis = require("./rewrite-this"); |
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var _rewriteLiveReferences = require("./rewrite-live-references"); |
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var _normalizeAndLoadMetadata = require("./normalize-and-load-metadata"); |
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var _getModuleName = require("./get-module-name"); |
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const { |
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booleanLiteral, |
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callExpression, |
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cloneNode, |
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directive, |
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directiveLiteral, |
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expressionStatement, |
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identifier, |
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isIdentifier, |
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memberExpression, |
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stringLiteral, |
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valueToNode, |
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variableDeclaration, |
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variableDeclarator |
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} = _t; |
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function rewriteModuleStatementsAndPrepareHeader(path, { |
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loose, |
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exportName, |
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strict, |
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allowTopLevelThis, |
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strictMode, |
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noInterop, |
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importInterop = noInterop ? "none" : "babel", |
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lazy, |
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esNamespaceOnly, |
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filename, |
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constantReexports = loose, |
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enumerableModuleMeta = loose, |
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noIncompleteNsImportDetection |
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}) { |
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(0, _normalizeAndLoadMetadata.validateImportInteropOption)(importInterop); |
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_assert((0, _helperModuleImports.isModule)(path), "Cannot process module statements in a script"); |
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path.node.sourceType = "script"; |
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const meta = (0, _normalizeAndLoadMetadata.default)(path, exportName, { |
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importInterop, |
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initializeReexports: constantReexports, |
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lazy, |
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esNamespaceOnly, |
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filename |
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}); |
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if (!allowTopLevelThis) { |
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(0, _rewriteThis.default)(path); |
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} |
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(0, _rewriteLiveReferences.default)(path, meta); |
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if (strictMode !== false) { |
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const hasStrict = path.node.directives.some(directive => { |
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return directive.value.value === "use strict"; |
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}); |
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if (!hasStrict) { |
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path.unshiftContainer("directives", directive(directiveLiteral("use strict"))); |
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} |
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} |
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const headers = []; |
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if ((0, _normalizeAndLoadMetadata.hasExports)(meta) && !strict) { |
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headers.push(buildESModuleHeader(meta, enumerableModuleMeta)); |
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} |
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const nameList = buildExportNameListDeclaration(path, meta); |
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if (nameList) { |
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meta.exportNameListName = nameList.name; |
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headers.push(nameList.statement); |
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} |
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headers.push(...buildExportInitializationStatements(path, meta, constantReexports, noIncompleteNsImportDetection)); |
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return { |
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meta, |
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headers |
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}; |
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} |
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function ensureStatementsHoisted(statements) { |
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statements.forEach(header => { |
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header._blockHoist = 3; |
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}); |
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} |
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function wrapInterop(programPath, expr, type) { |
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if (type === "none") { |
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return null; |
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} |
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if (type === "node-namespace") { |
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return callExpression(programPath.hub.addHelper("interopRequireWildcard"), [expr, booleanLiteral(true)]); |
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} else if (type === "node-default") { |
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return null; |
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} |
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let helper; |
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if (type === "default") { |
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helper = "interopRequireDefault"; |
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} else if (type === "namespace") { |
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helper = "interopRequireWildcard"; |
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} else { |
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throw new Error(`Unknown interop: ${type}`); |
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} |
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return callExpression(programPath.hub.addHelper(helper), [expr]); |
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} |
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function buildNamespaceInitStatements(metadata, sourceMetadata, constantReexports = false) { |
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const statements = []; |
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let srcNamespace = identifier(sourceMetadata.name); |
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if (sourceMetadata.lazy) srcNamespace = callExpression(srcNamespace, []); |
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for (const localName of sourceMetadata.importsNamespace) { |
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if (localName === sourceMetadata.name) continue; |
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statements.push(_template.default.statement`var NAME = SOURCE;`({ |
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NAME: localName, |
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SOURCE: cloneNode(srcNamespace) |
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})); |
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} |
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if (constantReexports) { |
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statements.push(...buildReexportsFromMeta(metadata, sourceMetadata, true)); |
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} |
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for (const exportName of sourceMetadata.reexportNamespace) { |
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statements.push((sourceMetadata.lazy ? _template.default.statement` |
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Object.defineProperty(EXPORTS, "NAME", { |
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enumerable: true, |
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get: function() { |
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return NAMESPACE; |
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} |
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}); |
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` : _template.default.statement`EXPORTS.NAME = NAMESPACE;`)({ |
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EXPORTS: metadata.exportName, |
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NAME: exportName, |
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NAMESPACE: cloneNode(srcNamespace) |
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})); |
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} |
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if (sourceMetadata.reexportAll) { |
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const statement = buildNamespaceReexport(metadata, cloneNode(srcNamespace), constantReexports); |
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statement.loc = sourceMetadata.reexportAll.loc; |
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statements.push(statement); |
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} |
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return statements; |
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} |
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const ReexportTemplate = { |
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constant: _template.default.statement`EXPORTS.EXPORT_NAME = NAMESPACE_IMPORT;`, |
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constantComputed: _template.default.statement`EXPORTS["EXPORT_NAME"] = NAMESPACE_IMPORT;`, |
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spec: _template.default.statement` |
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Object.defineProperty(EXPORTS, "EXPORT_NAME", { |
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enumerable: true, |
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get: function() { |
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return NAMESPACE_IMPORT; |
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}, |
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}); |
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` |
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}; |
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const buildReexportsFromMeta = (meta, metadata, constantReexports) => { |
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const namespace = metadata.lazy ? callExpression(identifier(metadata.name), []) : identifier(metadata.name); |
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const { |
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stringSpecifiers |
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} = meta; |
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return Array.from(metadata.reexports, ([exportName, importName]) => { |
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let NAMESPACE_IMPORT = cloneNode(namespace); |
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if (importName === "default" && metadata.interop === "node-default") {} else if (stringSpecifiers.has(importName)) { |
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NAMESPACE_IMPORT = memberExpression(NAMESPACE_IMPORT, stringLiteral(importName), true); |
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} else { |
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NAMESPACE_IMPORT = memberExpression(NAMESPACE_IMPORT, identifier(importName)); |
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} |
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const astNodes = { |
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EXPORTS: meta.exportName, |
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EXPORT_NAME: exportName, |
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NAMESPACE_IMPORT |
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}; |
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if (constantReexports || isIdentifier(NAMESPACE_IMPORT)) { |
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if (stringSpecifiers.has(exportName)) { |
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return ReexportTemplate.constantComputed(astNodes); |
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} else { |
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return ReexportTemplate.constant(astNodes); |
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} |
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} else { |
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return ReexportTemplate.spec(astNodes); |
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} |
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}); |
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}; |
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function buildESModuleHeader(metadata, enumerableModuleMeta = false) { |
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return (enumerableModuleMeta ? _template.default.statement` |
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EXPORTS.__esModule = true; |
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` : _template.default.statement` |
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Object.defineProperty(EXPORTS, "__esModule", { |
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value: true, |
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}); |
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`)({ |
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EXPORTS: metadata.exportName |
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}); |
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} |
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function buildNamespaceReexport(metadata, namespace, constantReexports) { |
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return (constantReexports ? _template.default.statement` |
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Object.keys(NAMESPACE).forEach(function(key) { |
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if (key === "default" || key === "__esModule") return; |
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VERIFY_NAME_LIST; |
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if (key in EXPORTS && EXPORTS[key] === NAMESPACE[key]) return; |
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EXPORTS[key] = NAMESPACE[key]; |
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}); |
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` : _template.default.statement` |
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Object.keys(NAMESPACE).forEach(function(key) { |
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if (key === "default" || key === "__esModule") return; |
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VERIFY_NAME_LIST; |
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if (key in EXPORTS && EXPORTS[key] === NAMESPACE[key]) return; |
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Object.defineProperty(EXPORTS, key, { |
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enumerable: true, |
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get: function() { |
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return NAMESPACE[key]; |
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}, |
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}); |
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}); |
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`)({ |
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NAMESPACE: namespace, |
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EXPORTS: metadata.exportName, |
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VERIFY_NAME_LIST: metadata.exportNameListName ? (0, _template.default)` |
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if (Object.prototype.hasOwnProperty.call(EXPORTS_LIST, key)) return; |
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`({ |
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EXPORTS_LIST: metadata.exportNameListName |
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}) : null |
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}); |
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} |
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function buildExportNameListDeclaration(programPath, metadata) { |
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const exportedVars = Object.create(null); |
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for (const data of metadata.local.values()) { |
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for (const name of data.names) { |
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exportedVars[name] = true; |
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} |
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} |
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let hasReexport = false; |
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for (const data of metadata.source.values()) { |
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for (const exportName of data.reexports.keys()) { |
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exportedVars[exportName] = true; |
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} |
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for (const exportName of data.reexportNamespace) { |
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exportedVars[exportName] = true; |
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} |
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hasReexport = hasReexport || !!data.reexportAll; |
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} |
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if (!hasReexport || Object.keys(exportedVars).length === 0) return null; |
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const name = programPath.scope.generateUidIdentifier("exportNames"); |
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delete exportedVars.default; |
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return { |
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name: name.name, |
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statement: variableDeclaration("var", [variableDeclarator(name, valueToNode(exportedVars))]) |
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}; |
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} |
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function buildExportInitializationStatements(programPath, metadata, constantReexports = false, noIncompleteNsImportDetection = false) { |
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const initStatements = []; |
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for (const [localName, data] of metadata.local) { |
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if (data.kind === "import") {} else if (data.kind === "hoisted") { |
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initStatements.push([data.names[0], buildInitStatement(metadata, data.names, identifier(localName))]); |
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} else if (!noIncompleteNsImportDetection) { |
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for (const exportName of data.names) { |
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initStatements.push([exportName, null]); |
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} |
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} |
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} |
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for (const data of metadata.source.values()) { |
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if (!constantReexports) { |
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const reexportsStatements = buildReexportsFromMeta(metadata, data, false); |
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const reexports = [...data.reexports.keys()]; |
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for (let i = 0; i < reexportsStatements.length; i++) { |
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initStatements.push([reexports[i], reexportsStatements[i]]); |
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} |
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} |
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if (!noIncompleteNsImportDetection) { |
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for (const exportName of data.reexportNamespace) { |
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initStatements.push([exportName, null]); |
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} |
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} |
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} |
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initStatements.sort(([a], [b]) => { |
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if (a < b) return -1; |
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if (b < a) return 1; |
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return 0; |
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}); |
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const results = []; |
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if (noIncompleteNsImportDetection) { |
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for (const [, initStatement] of initStatements) { |
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results.push(initStatement); |
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} |
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} else { |
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const chunkSize = 100; |
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for (let i = 0; i < initStatements.length; i += chunkSize) { |
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let uninitializedExportNames = []; |
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for (let j = 0; j < chunkSize && i + j < initStatements.length; j++) { |
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const [exportName, initStatement] = initStatements[i + j]; |
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if (initStatement !== null) { |
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if (uninitializedExportNames.length > 0) { |
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results.push(buildInitStatement(metadata, uninitializedExportNames, programPath.scope.buildUndefinedNode())); |
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uninitializedExportNames = []; |
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} |
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results.push(initStatement); |
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} else { |
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uninitializedExportNames.push(exportName); |
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} |
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} |
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if (uninitializedExportNames.length > 0) { |
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results.push(buildInitStatement(metadata, uninitializedExportNames, programPath.scope.buildUndefinedNode())); |
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} |
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} |
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} |
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return results; |
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} |
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const InitTemplate = { |
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computed: _template.default.expression`EXPORTS["NAME"] = VALUE`, |
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default: _template.default.expression`EXPORTS.NAME = VALUE` |
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}; |
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function buildInitStatement(metadata, exportNames, initExpr) { |
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const { |
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stringSpecifiers, |
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exportName: EXPORTS |
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} = metadata; |
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return expressionStatement(exportNames.reduce((acc, exportName) => { |
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const params = { |
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EXPORTS, |
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NAME: exportName, |
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VALUE: acc |
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}; |
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if (stringSpecifiers.has(exportName)) { |
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return InitTemplate.computed(params); |
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} else { |
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return InitTemplate.default(params); |
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} |
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}, initExpr)); |
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} |