| "use strict"; |
| |
| Object.defineProperty(exports, "__esModule", { |
| value: true |
| }); |
| exports.default = rewriteLiveReferences; |
| var _core = require("@babel/core"); |
| function isInType(path) { |
| do { |
| switch (path.parent.type) { |
| case "TSTypeAnnotation": |
| case "TSTypeAliasDeclaration": |
| case "TSTypeReference": |
| case "TypeAnnotation": |
| case "TypeAlias": |
| return true; |
| case "ExportSpecifier": |
| return path.parentPath.parent.exportKind === "type"; |
| default: |
| if (path.parentPath.isStatement() || path.parentPath.isExpression()) { |
| return false; |
| } |
| } |
| } while (path = path.parentPath); |
| } |
| function rewriteLiveReferences(programPath, metadata, wrapReference) { |
| const imported = new Map(); |
| const exported = new Map(); |
| const requeueInParent = path => { |
| programPath.requeue(path); |
| }; |
| for (const [source, data] of metadata.source) { |
| for (const [localName, importName] of data.imports) { |
| imported.set(localName, [source, importName, null]); |
| } |
| for (const localName of data.importsNamespace) { |
| imported.set(localName, [source, null, localName]); |
| } |
| } |
| for (const [local, data] of metadata.local) { |
| let exportMeta = exported.get(local); |
| if (!exportMeta) { |
| exportMeta = []; |
| exported.set(local, exportMeta); |
| } |
| exportMeta.push(...data.names); |
| } |
| const rewriteBindingInitVisitorState = { |
| metadata, |
| requeueInParent, |
| scope: programPath.scope, |
| exported |
| }; |
| programPath.traverse(rewriteBindingInitVisitor, rewriteBindingInitVisitorState); |
| const rewriteReferencesVisitorState = { |
| seen: new WeakSet(), |
| metadata, |
| requeueInParent, |
| scope: programPath.scope, |
| imported, |
| exported, |
| buildImportReference([source, importName, localName], identNode) { |
| const meta = metadata.source.get(source); |
| meta.referenced = true; |
| if (localName) { |
| if (meta.wrap) { |
| var _wrapReference; |
| identNode = (_wrapReference = wrapReference(identNode, meta.wrap)) != null ? _wrapReference : identNode; |
| } |
| return identNode; |
| } |
| let namespace = _core.types.identifier(meta.name); |
| if (meta.wrap) { |
| var _wrapReference2; |
| namespace = (_wrapReference2 = wrapReference(namespace, meta.wrap)) != null ? _wrapReference2 : namespace; |
| } |
| if (importName === "default" && meta.interop === "node-default") { |
| return namespace; |
| } |
| const computed = metadata.stringSpecifiers.has(importName); |
| return _core.types.memberExpression(namespace, computed ? _core.types.stringLiteral(importName) : _core.types.identifier(importName), computed); |
| } |
| }; |
| programPath.traverse(rewriteReferencesVisitor, rewriteReferencesVisitorState); |
| } |
| const rewriteBindingInitVisitor = { |
| Scope(path) { |
| path.skip(); |
| }, |
| ClassDeclaration(path) { |
| const { |
| requeueInParent, |
| exported, |
| metadata |
| } = this; |
| const { |
| id |
| } = path.node; |
| if (!id) throw new Error("Expected class to have a name"); |
| const localName = id.name; |
| const exportNames = exported.get(localName) || []; |
| if (exportNames.length > 0) { |
| const statement = _core.types.expressionStatement(buildBindingExportAssignmentExpression(metadata, exportNames, _core.types.identifier(localName), path.scope)); |
| statement._blockHoist = path.node._blockHoist; |
| requeueInParent(path.insertAfter(statement)[0]); |
| } |
| }, |
| VariableDeclaration(path) { |
| const { |
| requeueInParent, |
| exported, |
| metadata |
| } = this; |
| const isVar = path.node.kind === "var"; |
| for (const decl of path.get("declarations")) { |
| const { |
| id |
| } = decl.node; |
| let { |
| init |
| } = decl.node; |
| if (_core.types.isIdentifier(id) && exported.has(id.name) && !_core.types.isArrowFunctionExpression(init) && (!_core.types.isFunctionExpression(init) || init.id) && (!_core.types.isClassExpression(init) || init.id)) { |
| if (!init) { |
| if (isVar) { |
| continue; |
| } else { |
| init = path.scope.buildUndefinedNode(); |
| } |
| } |
| decl.node.init = buildBindingExportAssignmentExpression(metadata, exported.get(id.name), init, path.scope); |
| requeueInParent(decl.get("init")); |
| } else { |
| for (const localName of Object.keys(decl.getOuterBindingIdentifiers())) { |
| if (exported.has(localName)) { |
| const statement = _core.types.expressionStatement(buildBindingExportAssignmentExpression(metadata, exported.get(localName), _core.types.identifier(localName), path.scope)); |
| statement._blockHoist = path.node._blockHoist; |
| requeueInParent(path.insertAfter(statement)[0]); |
| } |
| } |
| } |
| } |
| } |
| }; |
| const buildBindingExportAssignmentExpression = (metadata, exportNames, localExpr, scope) => { |
| const exportsObjectName = metadata.exportName; |
| for (let currentScope = scope; currentScope != null; currentScope = currentScope.parent) { |
| if (currentScope.hasOwnBinding(exportsObjectName)) { |
| currentScope.rename(exportsObjectName); |
| } |
| } |
| return (exportNames || []).reduce((expr, exportName) => { |
| const { |
| stringSpecifiers |
| } = metadata; |
| const computed = stringSpecifiers.has(exportName); |
| return _core.types.assignmentExpression("=", _core.types.memberExpression(_core.types.identifier(exportsObjectName), computed ? _core.types.stringLiteral(exportName) : _core.types.identifier(exportName), computed), expr); |
| }, localExpr); |
| }; |
| const buildImportThrow = localName => { |
| return _core.template.expression.ast` |
| (function() { |
| throw new Error('"' + '${localName}' + '" is read-only.'); |
| })() |
| `; |
| }; |
| const rewriteReferencesVisitor = { |
| ReferencedIdentifier(path) { |
| const { |
| seen, |
| buildImportReference, |
| scope, |
| imported, |
| requeueInParent |
| } = this; |
| if (seen.has(path.node)) return; |
| seen.add(path.node); |
| const localName = path.node.name; |
| const importData = imported.get(localName); |
| if (importData) { |
| if (isInType(path)) { |
| throw path.buildCodeFrameError(`Cannot transform the imported binding "${localName}" since it's also used in a type annotation. ` + `Please strip type annotations using @babel/preset-typescript or @babel/preset-flow.`); |
| } |
| const localBinding = path.scope.getBinding(localName); |
| const rootBinding = scope.getBinding(localName); |
| if (rootBinding !== localBinding) return; |
| const ref = buildImportReference(importData, path.node); |
| ref.loc = path.node.loc; |
| if ((path.parentPath.isCallExpression({ |
| callee: path.node |
| }) || path.parentPath.isOptionalCallExpression({ |
| callee: path.node |
| }) || path.parentPath.isTaggedTemplateExpression({ |
| tag: path.node |
| })) && _core.types.isMemberExpression(ref)) { |
| path.replaceWith(_core.types.sequenceExpression([_core.types.numericLiteral(0), ref])); |
| } else if (path.isJSXIdentifier() && _core.types.isMemberExpression(ref)) { |
| const { |
| object, |
| property |
| } = ref; |
| path.replaceWith(_core.types.jsxMemberExpression(_core.types.jsxIdentifier(object.name), _core.types.jsxIdentifier(property.name))); |
| } else { |
| path.replaceWith(ref); |
| } |
| requeueInParent(path); |
| path.skip(); |
| } |
| }, |
| UpdateExpression(path) { |
| const { |
| scope, |
| seen, |
| imported, |
| exported, |
| requeueInParent, |
| buildImportReference |
| } = this; |
| if (seen.has(path.node)) return; |
| seen.add(path.node); |
| const arg = path.get("argument"); |
| if (arg.isMemberExpression()) return; |
| const update = path.node; |
| if (arg.isIdentifier()) { |
| const localName = arg.node.name; |
| if (scope.getBinding(localName) !== path.scope.getBinding(localName)) { |
| return; |
| } |
| const exportedNames = exported.get(localName); |
| const importData = imported.get(localName); |
| if ((exportedNames == null ? void 0 : exportedNames.length) > 0 || importData) { |
| if (importData) { |
| path.replaceWith(_core.types.assignmentExpression(update.operator[0] + "=", buildImportReference(importData, arg.node), buildImportThrow(localName))); |
| } else if (update.prefix) { |
| path.replaceWith(buildBindingExportAssignmentExpression(this.metadata, exportedNames, _core.types.cloneNode(update), path.scope)); |
| } else { |
| const ref = scope.generateDeclaredUidIdentifier(localName); |
| path.replaceWith(_core.types.sequenceExpression([_core.types.assignmentExpression("=", _core.types.cloneNode(ref), _core.types.cloneNode(update)), buildBindingExportAssignmentExpression(this.metadata, exportedNames, _core.types.identifier(localName), path.scope), _core.types.cloneNode(ref)])); |
| } |
| } |
| } |
| requeueInParent(path); |
| path.skip(); |
| }, |
| AssignmentExpression: { |
| exit(path) { |
| const { |
| scope, |
| seen, |
| imported, |
| exported, |
| requeueInParent, |
| buildImportReference |
| } = this; |
| if (seen.has(path.node)) return; |
| seen.add(path.node); |
| const left = path.get("left"); |
| if (left.isMemberExpression()) return; |
| if (left.isIdentifier()) { |
| const localName = left.node.name; |
| if (scope.getBinding(localName) !== path.scope.getBinding(localName)) { |
| return; |
| } |
| const exportedNames = exported.get(localName); |
| const importData = imported.get(localName); |
| if ((exportedNames == null ? void 0 : exportedNames.length) > 0 || importData) { |
| const assignment = path.node; |
| if (importData) { |
| assignment.left = buildImportReference(importData, left.node); |
| assignment.right = _core.types.sequenceExpression([assignment.right, buildImportThrow(localName)]); |
| } |
| const { |
| operator |
| } = assignment; |
| let newExpr; |
| if (operator === "=") { |
| newExpr = assignment; |
| } else if (operator === "&&=" || operator === "||=" || operator === "??=") { |
| newExpr = _core.types.assignmentExpression("=", assignment.left, _core.types.logicalExpression(operator.slice(0, -1), _core.types.cloneNode(assignment.left), assignment.right)); |
| } else { |
| newExpr = _core.types.assignmentExpression("=", assignment.left, _core.types.binaryExpression(operator.slice(0, -1), _core.types.cloneNode(assignment.left), assignment.right)); |
| } |
| path.replaceWith(buildBindingExportAssignmentExpression(this.metadata, exportedNames, newExpr, path.scope)); |
| requeueInParent(path); |
| path.skip(); |
| } |
| } else { |
| const ids = left.getOuterBindingIdentifiers(); |
| const programScopeIds = Object.keys(ids).filter(localName => scope.getBinding(localName) === path.scope.getBinding(localName)); |
| const id = programScopeIds.find(localName => imported.has(localName)); |
| if (id) { |
| path.node.right = _core.types.sequenceExpression([path.node.right, buildImportThrow(id)]); |
| } |
| const items = []; |
| programScopeIds.forEach(localName => { |
| const exportedNames = exported.get(localName) || []; |
| if (exportedNames.length > 0) { |
| items.push(buildBindingExportAssignmentExpression(this.metadata, exportedNames, _core.types.identifier(localName), path.scope)); |
| } |
| }); |
| if (items.length > 0) { |
| let node = _core.types.sequenceExpression(items); |
| if (path.parentPath.isExpressionStatement()) { |
| node = _core.types.expressionStatement(node); |
| node._blockHoist = path.parentPath.node._blockHoist; |
| } |
| const statement = path.insertAfter(node)[0]; |
| requeueInParent(statement); |
| } |
| } |
| } |
| }, |
| ForXStatement(path) { |
| const { |
| scope, |
| node |
| } = path; |
| const { |
| left |
| } = node; |
| const { |
| exported, |
| imported, |
| scope: programScope |
| } = this; |
| if (!_core.types.isVariableDeclaration(left)) { |
| let didTransformExport = false, |
| importConstViolationName; |
| const loopBodyScope = path.get("body").scope; |
| for (const name of Object.keys(_core.types.getOuterBindingIdentifiers(left))) { |
| if (programScope.getBinding(name) === scope.getBinding(name)) { |
| if (exported.has(name)) { |
| didTransformExport = true; |
| if (loopBodyScope.hasOwnBinding(name)) { |
| loopBodyScope.rename(name); |
| } |
| } |
| if (imported.has(name) && !importConstViolationName) { |
| importConstViolationName = name; |
| } |
| } |
| } |
| if (!didTransformExport && !importConstViolationName) { |
| return; |
| } |
| path.ensureBlock(); |
| const bodyPath = path.get("body"); |
| const newLoopId = scope.generateUidIdentifierBasedOnNode(left); |
| path.get("left").replaceWith(_core.types.variableDeclaration("let", [_core.types.variableDeclarator(_core.types.cloneNode(newLoopId))])); |
| scope.registerDeclaration(path.get("left")); |
| if (didTransformExport) { |
| bodyPath.unshiftContainer("body", _core.types.expressionStatement(_core.types.assignmentExpression("=", left, newLoopId))); |
| } |
| if (importConstViolationName) { |
| bodyPath.unshiftContainer("body", _core.types.expressionStatement(buildImportThrow(importConstViolationName))); |
| } |
| } |
| } |
| }; |
| |
| //# sourceMappingURL=rewrite-live-references.js.map |
