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| ; | |
| 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 | |