| | "use strict"; |
| |
|
| | Object.defineProperty(exports, "__esModule", { |
| | value: true |
| | }); |
| | exports.default = void 0; |
| | var _renamer = require("./lib/renamer.js"); |
| | var _index = require("../index.js"); |
| | var _binding = require("./binding.js"); |
| | var _t = require("@babel/types"); |
| | var t = _t; |
| | var _cache = require("../cache.js"); |
| | const globalsBuiltinLower = require("@babel/helper-globals/data/builtin-lower.json"), |
| | globalsBuiltinUpper = require("@babel/helper-globals/data/builtin-upper.json"); |
| | const { |
| | assignmentExpression, |
| | callExpression, |
| | cloneNode, |
| | getBindingIdentifiers, |
| | identifier, |
| | isArrayExpression, |
| | isBinary, |
| | isCallExpression, |
| | isClass, |
| | isClassBody, |
| | isClassDeclaration, |
| | isExportAllDeclaration, |
| | isExportDefaultDeclaration, |
| | isExportNamedDeclaration, |
| | isFunctionDeclaration, |
| | isIdentifier, |
| | isImportDeclaration, |
| | isLiteral, |
| | isMemberExpression, |
| | isMethod, |
| | isModuleSpecifier, |
| | isNullLiteral, |
| | isObjectExpression, |
| | isProperty, |
| | isPureish, |
| | isRegExpLiteral, |
| | isSuper, |
| | isTaggedTemplateExpression, |
| | isTemplateLiteral, |
| | isThisExpression, |
| | isUnaryExpression, |
| | isVariableDeclaration, |
| | expressionStatement, |
| | matchesPattern, |
| | memberExpression, |
| | numericLiteral, |
| | toIdentifier, |
| | variableDeclaration, |
| | variableDeclarator, |
| | isRecordExpression, |
| | isTupleExpression, |
| | isObjectProperty, |
| | isTopicReference, |
| | isMetaProperty, |
| | isPrivateName, |
| | isExportDeclaration, |
| | buildUndefinedNode, |
| | sequenceExpression |
| | } = _t; |
| | function gatherNodeParts(node, parts) { |
| | switch (node == null ? void 0 : node.type) { |
| | default: |
| | if (isImportDeclaration(node) || isExportDeclaration(node)) { |
| | var _node$specifiers; |
| | if ((isExportAllDeclaration(node) || isExportNamedDeclaration(node) || isImportDeclaration(node)) && node.source) { |
| | gatherNodeParts(node.source, parts); |
| | } else if ((isExportNamedDeclaration(node) || isImportDeclaration(node)) && (_node$specifiers = node.specifiers) != null && _node$specifiers.length) { |
| | for (const e of node.specifiers) gatherNodeParts(e, parts); |
| | } else if ((isExportDefaultDeclaration(node) || isExportNamedDeclaration(node)) && node.declaration) { |
| | gatherNodeParts(node.declaration, parts); |
| | } |
| | } else if (isModuleSpecifier(node)) { |
| | gatherNodeParts(node.local, parts); |
| | } else if (isLiteral(node) && !isNullLiteral(node) && !isRegExpLiteral(node) && !isTemplateLiteral(node)) { |
| | parts.push(node.value); |
| | } |
| | break; |
| | case "MemberExpression": |
| | case "OptionalMemberExpression": |
| | case "JSXMemberExpression": |
| | gatherNodeParts(node.object, parts); |
| | gatherNodeParts(node.property, parts); |
| | break; |
| | case "Identifier": |
| | case "JSXIdentifier": |
| | parts.push(node.name); |
| | break; |
| | case "CallExpression": |
| | case "OptionalCallExpression": |
| | case "NewExpression": |
| | gatherNodeParts(node.callee, parts); |
| | break; |
| | case "ObjectExpression": |
| | case "ObjectPattern": |
| | for (const e of node.properties) { |
| | gatherNodeParts(e, parts); |
| | } |
| | break; |
| | case "SpreadElement": |
| | case "RestElement": |
| | gatherNodeParts(node.argument, parts); |
| | break; |
| | case "ObjectProperty": |
| | case "ObjectMethod": |
| | case "ClassProperty": |
| | case "ClassMethod": |
| | case "ClassPrivateProperty": |
| | case "ClassPrivateMethod": |
| | gatherNodeParts(node.key, parts); |
| | break; |
| | case "ThisExpression": |
| | parts.push("this"); |
| | break; |
| | case "Super": |
| | parts.push("super"); |
| | break; |
| | case "Import": |
| | case "ImportExpression": |
| | parts.push("import"); |
| | break; |
| | case "DoExpression": |
| | parts.push("do"); |
| | break; |
| | case "YieldExpression": |
| | parts.push("yield"); |
| | gatherNodeParts(node.argument, parts); |
| | break; |
| | case "AwaitExpression": |
| | parts.push("await"); |
| | gatherNodeParts(node.argument, parts); |
| | break; |
| | case "AssignmentExpression": |
| | gatherNodeParts(node.left, parts); |
| | break; |
| | case "VariableDeclarator": |
| | gatherNodeParts(node.id, parts); |
| | break; |
| | case "FunctionExpression": |
| | case "FunctionDeclaration": |
| | case "ClassExpression": |
| | case "ClassDeclaration": |
| | gatherNodeParts(node.id, parts); |
| | break; |
| | case "PrivateName": |
| | gatherNodeParts(node.id, parts); |
| | break; |
| | case "ParenthesizedExpression": |
| | gatherNodeParts(node.expression, parts); |
| | break; |
| | case "UnaryExpression": |
| | case "UpdateExpression": |
| | gatherNodeParts(node.argument, parts); |
| | break; |
| | case "MetaProperty": |
| | gatherNodeParts(node.meta, parts); |
| | gatherNodeParts(node.property, parts); |
| | break; |
| | case "JSXElement": |
| | gatherNodeParts(node.openingElement, parts); |
| | break; |
| | case "JSXOpeningElement": |
| | gatherNodeParts(node.name, parts); |
| | break; |
| | case "JSXFragment": |
| | gatherNodeParts(node.openingFragment, parts); |
| | break; |
| | case "JSXOpeningFragment": |
| | parts.push("Fragment"); |
| | break; |
| | case "JSXNamespacedName": |
| | gatherNodeParts(node.namespace, parts); |
| | gatherNodeParts(node.name, parts); |
| | break; |
| | } |
| | } |
| | function resetScope(scope) { |
| | { |
| | scope.references = Object.create(null); |
| | scope.uids = Object.create(null); |
| | } |
| | scope.bindings = Object.create(null); |
| | scope.globals = Object.create(null); |
| | } |
| | { |
| | var NOT_LOCAL_BINDING = Symbol.for("should not be considered a local binding"); |
| | } |
| | const collectorVisitor = { |
| | ForStatement(path) { |
| | const declar = path.get("init"); |
| | if (declar.isVar()) { |
| | const { |
| | scope |
| | } = path; |
| | const parentScope = scope.getFunctionParent() || scope.getProgramParent(); |
| | parentScope.registerBinding("var", declar); |
| | } |
| | }, |
| | Declaration(path) { |
| | if (path.isBlockScoped()) return; |
| | if (path.isImportDeclaration()) return; |
| | if (path.isExportDeclaration()) return; |
| | const parent = path.scope.getFunctionParent() || path.scope.getProgramParent(); |
| | parent.registerDeclaration(path); |
| | }, |
| | ImportDeclaration(path) { |
| | const parent = path.scope.getBlockParent(); |
| | parent.registerDeclaration(path); |
| | }, |
| | TSImportEqualsDeclaration(path) { |
| | const parent = path.scope.getBlockParent(); |
| | parent.registerDeclaration(path); |
| | }, |
| | ReferencedIdentifier(path, state) { |
| | if (t.isTSQualifiedName(path.parent) && path.parent.right === path.node) { |
| | return; |
| | } |
| | if (path.parentPath.isTSImportEqualsDeclaration()) return; |
| | state.references.push(path); |
| | }, |
| | ForXStatement(path, state) { |
| | const left = path.get("left"); |
| | if (left.isPattern() || left.isIdentifier()) { |
| | state.constantViolations.push(path); |
| | } else if (left.isVar()) { |
| | const { |
| | scope |
| | } = path; |
| | const parentScope = scope.getFunctionParent() || scope.getProgramParent(); |
| | parentScope.registerBinding("var", left); |
| | } |
| | }, |
| | ExportDeclaration: { |
| | exit(path) { |
| | const { |
| | node, |
| | scope |
| | } = path; |
| | if (isExportAllDeclaration(node)) return; |
| | const declar = node.declaration; |
| | if (isClassDeclaration(declar) || isFunctionDeclaration(declar)) { |
| | const id = declar.id; |
| | if (!id) return; |
| | const binding = scope.getBinding(id.name); |
| | binding == null || binding.reference(path); |
| | } else if (isVariableDeclaration(declar)) { |
| | for (const decl of declar.declarations) { |
| | for (const name of Object.keys(getBindingIdentifiers(decl))) { |
| | const binding = scope.getBinding(name); |
| | binding == null || binding.reference(path); |
| | } |
| | } |
| | } |
| | } |
| | }, |
| | LabeledStatement(path) { |
| | path.scope.getBlockParent().registerDeclaration(path); |
| | }, |
| | AssignmentExpression(path, state) { |
| | state.assignments.push(path); |
| | }, |
| | UpdateExpression(path, state) { |
| | state.constantViolations.push(path); |
| | }, |
| | UnaryExpression(path, state) { |
| | if (path.node.operator === "delete") { |
| | state.constantViolations.push(path); |
| | } |
| | }, |
| | BlockScoped(path) { |
| | let scope = path.scope; |
| | if (scope.path === path) scope = scope.parent; |
| | const parent = scope.getBlockParent(); |
| | parent.registerDeclaration(path); |
| | if (path.isClassDeclaration() && path.node.id) { |
| | const id = path.node.id; |
| | const name = id.name; |
| | path.scope.bindings[name] = path.scope.parent.getBinding(name); |
| | } |
| | }, |
| | CatchClause(path) { |
| | path.scope.registerBinding("let", path); |
| | }, |
| | Function(path) { |
| | const params = path.get("params"); |
| | for (const param of params) { |
| | path.scope.registerBinding("param", param); |
| | } |
| | if (path.isFunctionExpression() && path.node.id && !path.node.id[NOT_LOCAL_BINDING]) { |
| | path.scope.registerBinding("local", path.get("id"), path); |
| | } |
| | }, |
| | ClassExpression(path) { |
| | if (path.node.id && !path.node.id[NOT_LOCAL_BINDING]) { |
| | path.scope.registerBinding("local", path.get("id"), path); |
| | } |
| | }, |
| | TSTypeAnnotation(path) { |
| | path.skip(); |
| | } |
| | }; |
| | let scopeVisitor; |
| | let uid = 0; |
| | class Scope { |
| | constructor(path) { |
| | this.uid = void 0; |
| | this.path = void 0; |
| | this.block = void 0; |
| | this.inited = void 0; |
| | this.labels = void 0; |
| | this.bindings = void 0; |
| | this.referencesSet = void 0; |
| | this.globals = void 0; |
| | this.uidsSet = void 0; |
| | this.data = void 0; |
| | this.crawling = void 0; |
| | const { |
| | node |
| | } = path; |
| | const cached = _cache.scope.get(node); |
| | if ((cached == null ? void 0 : cached.path) === path) { |
| | return cached; |
| | } |
| | _cache.scope.set(node, this); |
| | this.uid = uid++; |
| | this.block = node; |
| | this.path = path; |
| | this.labels = new Map(); |
| | this.inited = false; |
| | { |
| | Object.defineProperties(this, { |
| | references: { |
| | enumerable: true, |
| | configurable: true, |
| | writable: true, |
| | value: Object.create(null) |
| | }, |
| | uids: { |
| | enumerable: true, |
| | configurable: true, |
| | writable: true, |
| | value: Object.create(null) |
| | } |
| | }); |
| | } |
| | } |
| | get parent() { |
| | var _parent; |
| | let parent, |
| | path = this.path; |
| | do { |
| | var _path; |
| | const shouldSkip = path.key === "key" || path.listKey === "decorators"; |
| | path = path.parentPath; |
| | if (shouldSkip && path.isMethod()) path = path.parentPath; |
| | if ((_path = path) != null && _path.isScope()) parent = path; |
| | } while (path && !parent); |
| | return (_parent = parent) == null ? void 0 : _parent.scope; |
| | } |
| | get references() { |
| | throw new Error("Scope#references is not available in Babel 8. Use Scope#referencesSet instead."); |
| | } |
| | get uids() { |
| | throw new Error("Scope#uids is not available in Babel 8. Use Scope#uidsSet instead."); |
| | } |
| | generateDeclaredUidIdentifier(name) { |
| | const id = this.generateUidIdentifier(name); |
| | this.push({ |
| | id |
| | }); |
| | return cloneNode(id); |
| | } |
| | generateUidIdentifier(name) { |
| | return identifier(this.generateUid(name)); |
| | } |
| | generateUid(name = "temp") { |
| | name = toIdentifier(name).replace(/^_+/, "").replace(/\d+$/g, ""); |
| | let uid; |
| | let i = 0; |
| | do { |
| | uid = `_${name}`; |
| | if (i >= 11) uid += i - 1;else if (i >= 9) uid += i - 9;else if (i >= 1) uid += i + 1; |
| | i++; |
| | } while (this.hasLabel(uid) || this.hasBinding(uid) || this.hasGlobal(uid) || this.hasReference(uid)); |
| | const program = this.getProgramParent(); |
| | { |
| | program.references[uid] = true; |
| | program.uids[uid] = true; |
| | } |
| | return uid; |
| | } |
| | generateUidBasedOnNode(node, defaultName) { |
| | const parts = []; |
| | gatherNodeParts(node, parts); |
| | let id = parts.join("$"); |
| | id = id.replace(/^_/, "") || defaultName || "ref"; |
| | return this.generateUid(id.slice(0, 20)); |
| | } |
| | generateUidIdentifierBasedOnNode(node, defaultName) { |
| | return identifier(this.generateUidBasedOnNode(node, defaultName)); |
| | } |
| | isStatic(node) { |
| | if (isThisExpression(node) || isSuper(node) || isTopicReference(node)) { |
| | return true; |
| | } |
| | if (isIdentifier(node)) { |
| | const binding = this.getBinding(node.name); |
| | if (binding) { |
| | return binding.constant; |
| | } else { |
| | return this.hasBinding(node.name); |
| | } |
| | } |
| | return false; |
| | } |
| | maybeGenerateMemoised(node, dontPush) { |
| | if (this.isStatic(node)) { |
| | return null; |
| | } else { |
| | const id = this.generateUidIdentifierBasedOnNode(node); |
| | if (!dontPush) { |
| | this.push({ |
| | id |
| | }); |
| | return cloneNode(id); |
| | } |
| | return id; |
| | } |
| | } |
| | checkBlockScopedCollisions(local, kind, name, id) { |
| | if (kind === "param") return; |
| | if (local.kind === "local") return; |
| | const duplicate = kind === "let" || local.kind === "let" || local.kind === "const" || local.kind === "module" || local.kind === "param" && kind === "const"; |
| | if (duplicate) { |
| | throw this.path.hub.buildError(id, `Duplicate declaration "${name}"`, TypeError); |
| | } |
| | } |
| | rename(oldName, newName) { |
| | const binding = this.getBinding(oldName); |
| | if (binding) { |
| | newName || (newName = this.generateUidIdentifier(oldName).name); |
| | const renamer = new _renamer.default(binding, oldName, newName); |
| | { |
| | renamer.rename(arguments[2]); |
| | } |
| | } |
| | } |
| | dump() { |
| | const sep = "-".repeat(60); |
| | console.log(sep); |
| | let scope = this; |
| | do { |
| | console.log("#", scope.block.type); |
| | for (const name of Object.keys(scope.bindings)) { |
| | const binding = scope.bindings[name]; |
| | console.log(" -", name, { |
| | constant: binding.constant, |
| | references: binding.references, |
| | violations: binding.constantViolations.length, |
| | kind: binding.kind |
| | }); |
| | } |
| | } while (scope = scope.parent); |
| | console.log(sep); |
| | } |
| | hasLabel(name) { |
| | return !!this.getLabel(name); |
| | } |
| | getLabel(name) { |
| | return this.labels.get(name); |
| | } |
| | registerLabel(path) { |
| | this.labels.set(path.node.label.name, path); |
| | } |
| | registerDeclaration(path) { |
| | if (path.isLabeledStatement()) { |
| | this.registerLabel(path); |
| | } else if (path.isFunctionDeclaration()) { |
| | this.registerBinding("hoisted", path.get("id"), path); |
| | } else if (path.isVariableDeclaration()) { |
| | const declarations = path.get("declarations"); |
| | const { |
| | kind |
| | } = path.node; |
| | for (const declar of declarations) { |
| | this.registerBinding(kind === "using" || kind === "await using" ? "const" : kind, declar); |
| | } |
| | } else if (path.isClassDeclaration()) { |
| | if (path.node.declare) return; |
| | this.registerBinding("let", path); |
| | } else if (path.isImportDeclaration()) { |
| | const isTypeDeclaration = path.node.importKind === "type" || path.node.importKind === "typeof"; |
| | const specifiers = path.get("specifiers"); |
| | for (const specifier of specifiers) { |
| | const isTypeSpecifier = isTypeDeclaration || specifier.isImportSpecifier() && (specifier.node.importKind === "type" || specifier.node.importKind === "typeof"); |
| | this.registerBinding(isTypeSpecifier ? "unknown" : "module", specifier); |
| | } |
| | } else if (path.isExportDeclaration()) { |
| | const declar = path.get("declaration"); |
| | if (declar.isClassDeclaration() || declar.isFunctionDeclaration() || declar.isVariableDeclaration()) { |
| | this.registerDeclaration(declar); |
| | } |
| | } else { |
| | this.registerBinding("unknown", path); |
| | } |
| | } |
| | buildUndefinedNode() { |
| | return buildUndefinedNode(); |
| | } |
| | registerConstantViolation(path) { |
| | const ids = path.getAssignmentIdentifiers(); |
| | for (const name of Object.keys(ids)) { |
| | var _this$getBinding; |
| | (_this$getBinding = this.getBinding(name)) == null || _this$getBinding.reassign(path); |
| | } |
| | } |
| | registerBinding(kind, path, bindingPath = path) { |
| | if (!kind) throw new ReferenceError("no `kind`"); |
| | if (path.isVariableDeclaration()) { |
| | const declarators = path.get("declarations"); |
| | for (const declar of declarators) { |
| | this.registerBinding(kind, declar); |
| | } |
| | return; |
| | } |
| | const parent = this.getProgramParent(); |
| | const ids = path.getOuterBindingIdentifiers(true); |
| | for (const name of Object.keys(ids)) { |
| | { |
| | parent.references[name] = true; |
| | } |
| | for (const id of ids[name]) { |
| | const local = this.getOwnBinding(name); |
| | if (local) { |
| | if (local.identifier === id) continue; |
| | this.checkBlockScopedCollisions(local, kind, name, id); |
| | } |
| | if (local) { |
| | local.reassign(bindingPath); |
| | } else { |
| | this.bindings[name] = new _binding.default({ |
| | identifier: id, |
| | scope: this, |
| | path: bindingPath, |
| | kind: kind |
| | }); |
| | } |
| | } |
| | } |
| | } |
| | addGlobal(node) { |
| | this.globals[node.name] = node; |
| | } |
| | hasUid(name) { |
| | { |
| | let scope = this; |
| | do { |
| | if (scope.uids[name]) return true; |
| | } while (scope = scope.parent); |
| | return false; |
| | } |
| | } |
| | hasGlobal(name) { |
| | let scope = this; |
| | do { |
| | if (scope.globals[name]) return true; |
| | } while (scope = scope.parent); |
| | return false; |
| | } |
| | hasReference(name) { |
| | { |
| | return !!this.getProgramParent().references[name]; |
| | } |
| | } |
| | isPure(node, constantsOnly) { |
| | if (isIdentifier(node)) { |
| | const binding = this.getBinding(node.name); |
| | if (!binding) return false; |
| | if (constantsOnly) return binding.constant; |
| | return true; |
| | } else if (isThisExpression(node) || isMetaProperty(node) || isTopicReference(node) || isPrivateName(node)) { |
| | return true; |
| | } else if (isClass(node)) { |
| | var _node$decorators; |
| | if (node.superClass && !this.isPure(node.superClass, constantsOnly)) { |
| | return false; |
| | } |
| | if (((_node$decorators = node.decorators) == null ? void 0 : _node$decorators.length) > 0) { |
| | return false; |
| | } |
| | return this.isPure(node.body, constantsOnly); |
| | } else if (isClassBody(node)) { |
| | for (const method of node.body) { |
| | if (!this.isPure(method, constantsOnly)) return false; |
| | } |
| | return true; |
| | } else if (isBinary(node)) { |
| | return this.isPure(node.left, constantsOnly) && this.isPure(node.right, constantsOnly); |
| | } else if (isArrayExpression(node) || isTupleExpression(node)) { |
| | for (const elem of node.elements) { |
| | if (elem !== null && !this.isPure(elem, constantsOnly)) return false; |
| | } |
| | return true; |
| | } else if (isObjectExpression(node) || isRecordExpression(node)) { |
| | for (const prop of node.properties) { |
| | if (!this.isPure(prop, constantsOnly)) return false; |
| | } |
| | return true; |
| | } else if (isMethod(node)) { |
| | var _node$decorators2; |
| | if (node.computed && !this.isPure(node.key, constantsOnly)) return false; |
| | if (((_node$decorators2 = node.decorators) == null ? void 0 : _node$decorators2.length) > 0) { |
| | return false; |
| | } |
| | return true; |
| | } else if (isProperty(node)) { |
| | var _node$decorators3; |
| | if (node.computed && !this.isPure(node.key, constantsOnly)) return false; |
| | if (((_node$decorators3 = node.decorators) == null ? void 0 : _node$decorators3.length) > 0) { |
| | return false; |
| | } |
| | if (isObjectProperty(node) || node.static) { |
| | if (node.value !== null && !this.isPure(node.value, constantsOnly)) { |
| | return false; |
| | } |
| | } |
| | return true; |
| | } else if (isUnaryExpression(node)) { |
| | return this.isPure(node.argument, constantsOnly); |
| | } else if (isTemplateLiteral(node)) { |
| | for (const expression of node.expressions) { |
| | if (!this.isPure(expression, constantsOnly)) return false; |
| | } |
| | return true; |
| | } else if (isTaggedTemplateExpression(node)) { |
| | return matchesPattern(node.tag, "String.raw") && !this.hasBinding("String", { |
| | noGlobals: true |
| | }) && this.isPure(node.quasi, constantsOnly); |
| | } else if (isMemberExpression(node)) { |
| | return !node.computed && isIdentifier(node.object) && node.object.name === "Symbol" && isIdentifier(node.property) && node.property.name !== "for" && !this.hasBinding("Symbol", { |
| | noGlobals: true |
| | }); |
| | } else if (isCallExpression(node)) { |
| | return matchesPattern(node.callee, "Symbol.for") && !this.hasBinding("Symbol", { |
| | noGlobals: true |
| | }) && node.arguments.length === 1 && t.isStringLiteral(node.arguments[0]); |
| | } else { |
| | return isPureish(node); |
| | } |
| | } |
| | setData(key, val) { |
| | return this.data[key] = val; |
| | } |
| | getData(key) { |
| | let scope = this; |
| | do { |
| | const data = scope.data[key]; |
| | if (data != null) return data; |
| | } while (scope = scope.parent); |
| | } |
| | removeData(key) { |
| | let scope = this; |
| | do { |
| | const data = scope.data[key]; |
| | if (data != null) scope.data[key] = null; |
| | } while (scope = scope.parent); |
| | } |
| | init() { |
| | if (!this.inited) { |
| | this.inited = true; |
| | this.crawl(); |
| | } |
| | } |
| | crawl() { |
| | const path = this.path; |
| | resetScope(this); |
| | this.data = Object.create(null); |
| | let scope = this; |
| | do { |
| | if (scope.crawling) return; |
| | if (scope.path.isProgram()) { |
| | break; |
| | } |
| | } while (scope = scope.parent); |
| | const programParent = scope; |
| | const state = { |
| | references: [], |
| | constantViolations: [], |
| | assignments: [] |
| | }; |
| | this.crawling = true; |
| | scopeVisitor || (scopeVisitor = _index.default.visitors.merge([{ |
| | Scope(path) { |
| | resetScope(path.scope); |
| | } |
| | }, collectorVisitor])); |
| | if (path.type !== "Program") { |
| | for (const visit of scopeVisitor.enter) { |
| | visit.call(state, path, state); |
| | } |
| | const typeVisitors = scopeVisitor[path.type]; |
| | if (typeVisitors) { |
| | for (const visit of typeVisitors.enter) { |
| | visit.call(state, path, state); |
| | } |
| | } |
| | } |
| | path.traverse(scopeVisitor, state); |
| | this.crawling = false; |
| | for (const path of state.assignments) { |
| | const ids = path.getAssignmentIdentifiers(); |
| | for (const name of Object.keys(ids)) { |
| | if (path.scope.getBinding(name)) continue; |
| | programParent.addGlobal(ids[name]); |
| | } |
| | path.scope.registerConstantViolation(path); |
| | } |
| | for (const ref of state.references) { |
| | const binding = ref.scope.getBinding(ref.node.name); |
| | if (binding) { |
| | binding.reference(ref); |
| | } else { |
| | programParent.addGlobal(ref.node); |
| | } |
| | } |
| | for (const path of state.constantViolations) { |
| | path.scope.registerConstantViolation(path); |
| | } |
| | } |
| | push(opts) { |
| | let path = this.path; |
| | if (path.isPattern()) { |
| | path = this.getPatternParent().path; |
| | } else if (!path.isBlockStatement() && !path.isProgram()) { |
| | path = this.getBlockParent().path; |
| | } |
| | if (path.isSwitchStatement()) { |
| | path = (this.getFunctionParent() || this.getProgramParent()).path; |
| | } |
| | const { |
| | init, |
| | unique, |
| | kind = "var", |
| | id |
| | } = opts; |
| | if (!init && !unique && (kind === "var" || kind === "let") && path.isFunction() && !path.node.name && isCallExpression(path.parent, { |
| | callee: path.node |
| | }) && path.parent.arguments.length <= path.node.params.length && isIdentifier(id)) { |
| | path.pushContainer("params", id); |
| | path.scope.registerBinding("param", path.get("params")[path.node.params.length - 1]); |
| | return; |
| | } |
| | if (path.isLoop() || path.isCatchClause() || path.isFunction()) { |
| | path.ensureBlock(); |
| | path = path.get("body"); |
| | } |
| | const blockHoist = opts._blockHoist == null ? 2 : opts._blockHoist; |
| | const dataKey = `declaration:${kind}:${blockHoist}`; |
| | let declarPath = !unique && path.getData(dataKey); |
| | if (!declarPath) { |
| | const declar = variableDeclaration(kind, []); |
| | declar._blockHoist = blockHoist; |
| | [declarPath] = path.unshiftContainer("body", [declar]); |
| | if (!unique) path.setData(dataKey, declarPath); |
| | } |
| | const declarator = variableDeclarator(id, init); |
| | const len = declarPath.node.declarations.push(declarator); |
| | path.scope.registerBinding(kind, declarPath.get("declarations")[len - 1]); |
| | } |
| | getProgramParent() { |
| | let scope = this; |
| | do { |
| | if (scope.path.isProgram()) { |
| | return scope; |
| | } |
| | } while (scope = scope.parent); |
| | throw new Error("Couldn't find a Program"); |
| | } |
| | getFunctionParent() { |
| | let scope = this; |
| | do { |
| | if (scope.path.isFunctionParent()) { |
| | return scope; |
| | } |
| | } while (scope = scope.parent); |
| | return null; |
| | } |
| | getBlockParent() { |
| | let scope = this; |
| | do { |
| | if (scope.path.isBlockParent()) { |
| | return scope; |
| | } |
| | } while (scope = scope.parent); |
| | throw new Error("We couldn't find a BlockStatement, For, Switch, Function, Loop or Program..."); |
| | } |
| | getPatternParent() { |
| | let scope = this; |
| | do { |
| | if (!scope.path.isPattern()) { |
| | return scope.getBlockParent(); |
| | } |
| | } while (scope = scope.parent.parent); |
| | throw new Error("We couldn't find a BlockStatement, For, Switch, Function, Loop or Program..."); |
| | } |
| | getAllBindings() { |
| | const ids = Object.create(null); |
| | let scope = this; |
| | do { |
| | for (const key of Object.keys(scope.bindings)) { |
| | if (key in ids === false) { |
| | ids[key] = scope.bindings[key]; |
| | } |
| | } |
| | scope = scope.parent; |
| | } while (scope); |
| | return ids; |
| | } |
| | bindingIdentifierEquals(name, node) { |
| | return this.getBindingIdentifier(name) === node; |
| | } |
| | getBinding(name) { |
| | let scope = this; |
| | let previousPath; |
| | do { |
| | const binding = scope.getOwnBinding(name); |
| | if (binding) { |
| | var _previousPath; |
| | if ((_previousPath = previousPath) != null && _previousPath.isPattern() && binding.kind !== "param" && binding.kind !== "local") {} else { |
| | return binding; |
| | } |
| | } else if (!binding && name === "arguments" && scope.path.isFunction() && !scope.path.isArrowFunctionExpression()) { |
| | break; |
| | } |
| | previousPath = scope.path; |
| | } while (scope = scope.parent); |
| | } |
| | getOwnBinding(name) { |
| | return this.bindings[name]; |
| | } |
| | getBindingIdentifier(name) { |
| | var _this$getBinding2; |
| | return (_this$getBinding2 = this.getBinding(name)) == null ? void 0 : _this$getBinding2.identifier; |
| | } |
| | getOwnBindingIdentifier(name) { |
| | const binding = this.bindings[name]; |
| | return binding == null ? void 0 : binding.identifier; |
| | } |
| | hasOwnBinding(name) { |
| | return !!this.getOwnBinding(name); |
| | } |
| | hasBinding(name, opts) { |
| | if (!name) return false; |
| | let noGlobals; |
| | let noUids; |
| | let upToScope; |
| | if (typeof opts === "object") { |
| | noGlobals = opts.noGlobals; |
| | noUids = opts.noUids; |
| | upToScope = opts.upToScope; |
| | } else if (typeof opts === "boolean") { |
| | noGlobals = opts; |
| | } |
| | let scope = this; |
| | do { |
| | if (upToScope === scope) { |
| | break; |
| | } |
| | if (scope.hasOwnBinding(name)) { |
| | return true; |
| | } |
| | } while (scope = scope.parent); |
| | if (!noUids && this.hasUid(name)) return true; |
| | if (!noGlobals && Scope.globals.includes(name)) return true; |
| | if (!noGlobals && Scope.contextVariables.includes(name)) return true; |
| | return false; |
| | } |
| | parentHasBinding(name, opts) { |
| | var _this$parent; |
| | return (_this$parent = this.parent) == null ? void 0 : _this$parent.hasBinding(name, opts); |
| | } |
| | moveBindingTo(name, scope) { |
| | const info = this.getBinding(name); |
| | if (info) { |
| | info.scope.removeOwnBinding(name); |
| | info.scope = scope; |
| | scope.bindings[name] = info; |
| | } |
| | } |
| | removeOwnBinding(name) { |
| | delete this.bindings[name]; |
| | } |
| | removeBinding(name) { |
| | var _this$getBinding3; |
| | (_this$getBinding3 = this.getBinding(name)) == null || _this$getBinding3.scope.removeOwnBinding(name); |
| | { |
| | let scope = this; |
| | do { |
| | if (scope.uids[name]) { |
| | scope.uids[name] = false; |
| | } |
| | } while (scope = scope.parent); |
| | } |
| | } |
| | hoistVariables(emit = id => this.push({ |
| | id |
| | })) { |
| | this.crawl(); |
| | const seen = new Set(); |
| | for (const name of Object.keys(this.bindings)) { |
| | const binding = this.bindings[name]; |
| | if (!binding) continue; |
| | const { |
| | path |
| | } = binding; |
| | if (!path.isVariableDeclarator()) continue; |
| | const { |
| | parent, |
| | parentPath |
| | } = path; |
| | if (parent.kind !== "var" || seen.has(parent)) continue; |
| | seen.add(path.parent); |
| | let firstId; |
| | const init = []; |
| | for (const decl of parent.declarations) { |
| | firstId != null ? firstId : firstId = decl.id; |
| | if (decl.init) { |
| | init.push(assignmentExpression("=", decl.id, decl.init)); |
| | } |
| | const ids = Object.keys(getBindingIdentifiers(decl, false, true, true)); |
| | for (const name of ids) { |
| | emit(identifier(name), decl.init != null); |
| | } |
| | } |
| | if (parentPath.parentPath.isFor({ |
| | left: parent |
| | })) { |
| | parentPath.replaceWith(firstId); |
| | } else if (init.length === 0) { |
| | parentPath.remove(); |
| | } else { |
| | const expr = init.length === 1 ? init[0] : sequenceExpression(init); |
| | if (parentPath.parentPath.isForStatement({ |
| | init: parent |
| | })) { |
| | parentPath.replaceWith(expr); |
| | } else { |
| | parentPath.replaceWith(expressionStatement(expr)); |
| | } |
| | } |
| | } |
| | } |
| | } |
| | exports.default = Scope; |
| | Scope.globals = [...globalsBuiltinLower, ...globalsBuiltinUpper]; |
| | Scope.contextVariables = ["arguments", "undefined", "Infinity", "NaN"]; |
| | { |
| | Scope.prototype._renameFromMap = function _renameFromMap(map, oldName, newName, value) { |
| | if (map[oldName]) { |
| | map[newName] = value; |
| | map[oldName] = null; |
| | } |
| | }; |
| | Scope.prototype.traverse = function (node, opts, state) { |
| | (0, _index.default)(node, opts, this, state, this.path); |
| | }; |
| | Scope.prototype._generateUid = function _generateUid(name, i) { |
| | let id = name; |
| | if (i > 1) id += i; |
| | return `_${id}`; |
| | }; |
| | Scope.prototype.toArray = function toArray(node, i, arrayLikeIsIterable) { |
| | if (isIdentifier(node)) { |
| | const binding = this.getBinding(node.name); |
| | if (binding != null && binding.constant && binding.path.isGenericType("Array")) { |
| | return node; |
| | } |
| | } |
| | if (isArrayExpression(node)) { |
| | return node; |
| | } |
| | if (isIdentifier(node, { |
| | name: "arguments" |
| | })) { |
| | return callExpression(memberExpression(memberExpression(memberExpression(identifier("Array"), identifier("prototype")), identifier("slice")), identifier("call")), [node]); |
| | } |
| | let helperName; |
| | const args = [node]; |
| | if (i === true) { |
| | helperName = "toConsumableArray"; |
| | } else if (typeof i === "number") { |
| | args.push(numericLiteral(i)); |
| | helperName = "slicedToArray"; |
| | } else { |
| | helperName = "toArray"; |
| | } |
| | if (arrayLikeIsIterable) { |
| | args.unshift(this.path.hub.addHelper(helperName)); |
| | helperName = "maybeArrayLike"; |
| | } |
| | return callExpression(this.path.hub.addHelper(helperName), args); |
| | }; |
| | Scope.prototype.getAllBindingsOfKind = function getAllBindingsOfKind(...kinds) { |
| | const ids = Object.create(null); |
| | for (const kind of kinds) { |
| | let scope = this; |
| | do { |
| | for (const name of Object.keys(scope.bindings)) { |
| | const binding = scope.bindings[name]; |
| | if (binding.kind === kind) ids[name] = binding; |
| | } |
| | scope = scope.parent; |
| | } while (scope); |
| | } |
| | return ids; |
| | }; |
| | Object.defineProperties(Scope.prototype, { |
| | parentBlock: { |
| | configurable: true, |
| | enumerable: true, |
| | get() { |
| | return this.path.parent; |
| | } |
| | }, |
| | hub: { |
| | configurable: true, |
| | enumerable: true, |
| | get() { |
| | return this.path.hub; |
| | } |
| | } |
| | }); |
| | } |
| |
|
| | |
| |
|
