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@tanstack/router-utils
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| const require_runtime = require("./_virtual/_rolldown/runtime.cjs"); | ||
| let _babel_types = require("@babel/types"); | ||
| _babel_types = require_runtime.__toESM(_babel_types); | ||
| //#region src/compiler-helpers.ts | ||
| function getModuleExportName(node) { | ||
| return _babel_types.isIdentifier(node) ? node.name : node.value; | ||
| } | ||
| function addVariableDeclarationModuleInfo(declaration, bindings, exportMap) { | ||
| for (const declarator of declaration.declarations) for (const name of collectIdentifiersFromPattern(declarator.id)) { | ||
| bindings.set(name, { | ||
| type: "var", | ||
| init: declarator.init ?? null | ||
| }); | ||
| exportMap?.set(name, name); | ||
| } | ||
| } | ||
| function addDeclarationModuleInfo(declaration, bindings, exportMap) { | ||
| if (_babel_types.isVariableDeclaration(declaration)) { | ||
| addVariableDeclarationModuleInfo(declaration, bindings, exportMap); | ||
| return; | ||
| } | ||
| if ((_babel_types.isFunctionDeclaration(declaration) || _babel_types.isClassDeclaration(declaration)) && declaration.id) { | ||
| bindings.set(declaration.id.name, { | ||
| type: "var", | ||
| init: null | ||
| }); | ||
| exportMap?.set(declaration.id.name, declaration.id.name); | ||
| } | ||
| } | ||
| function hasIdentifierBinding(scopes, name) { | ||
| for (let i = scopes.length - 1; i >= 0; i--) if (scopes[i].bindings.has(name)) return true; | ||
| return false; | ||
| } | ||
| function currentIdentifierScope(scopes) { | ||
| return scopes[scopes.length - 1]; | ||
| } | ||
| function nearestFunctionIdentifierScope(scopes) { | ||
| for (let i = scopes.length - 1; i >= 0; i--) { | ||
| const scope = scopes[i]; | ||
| if (scope.kind === "function" || scope.kind === "program") return scope; | ||
| } | ||
| return currentIdentifierScope(scopes); | ||
| } | ||
| function addIdentifierPatternBindings(pattern, scope) { | ||
| for (const name of collectIdentifiersFromPattern(pattern)) scope.bindings.add(name); | ||
| } | ||
| function addIdentifierDeclarationBindings(declaration, scopes) { | ||
| if (_babel_types.isVariableDeclaration(declaration)) { | ||
| const scope = declaration.kind === "var" ? nearestFunctionIdentifierScope(scopes) : currentIdentifierScope(scopes); | ||
| for (const declarator of declaration.declarations) addIdentifierPatternBindings(declarator.id, scope); | ||
| return; | ||
| } | ||
| if ((_babel_types.isFunctionDeclaration(declaration) || _babel_types.isClassDeclaration(declaration) || _babel_types.isTSTypeAliasDeclaration(declaration) || _babel_types.isTSInterfaceDeclaration(declaration) || _babel_types.isTSEnumDeclaration(declaration)) && declaration.id) currentIdentifierScope(scopes).bindings.add(declaration.id.name); | ||
| } | ||
| function addIdentifierImportBindings(node, scope) { | ||
| for (const specifier of node.specifiers) scope.bindings.add(specifier.local.name); | ||
| } | ||
| function createNestedIdentifierScope(kind, scopes) { | ||
| return [...scopes, { | ||
| kind, | ||
| bindings: /* @__PURE__ */ new Set() | ||
| }]; | ||
| } | ||
| function addIdentifierBlockBindings(body, scopes) { | ||
| for (const statement of body) if (_babel_types.isImportDeclaration(statement)) addIdentifierImportBindings(statement, currentIdentifierScope(scopes)); | ||
| else if (_babel_types.isExportNamedDeclaration(statement) && statement.declaration) addIdentifierDeclarationBindings(statement.declaration, scopes); | ||
| else addIdentifierDeclarationBindings(statement, scopes); | ||
| } | ||
| function walkIdentifierChildren(current, parent, scopes, ids) { | ||
| for (const key of _babel_types.VISITOR_KEYS[current.type] ?? []) { | ||
| const child = current[key]; | ||
| if (Array.isArray(child)) { | ||
| for (const item of child) if (item && typeof item.type === "string") walkIdentifierNode(item, current, parent, key, scopes, ids); | ||
| } else if (child && typeof child.type === "string") walkIdentifierNode(child, current, parent, key, scopes, ids); | ||
| } | ||
| } | ||
| function walkIdentifierNode(current, parent, grandparent, parentKey, scopes, ids) { | ||
| if (!current) return; | ||
| if (_babel_types.isIdentifier(current)) { | ||
| if ((!parent || _babel_types.isReferenced(current, parent, grandparent)) && !hasIdentifierBinding(scopes, current.name)) ids.add(current.name); | ||
| return; | ||
| } | ||
| if (_babel_types.isJSXIdentifier(current)) { | ||
| if (parent && _babel_types.isJSXAttribute(parent) && parentKey === "name") return; | ||
| if (parent && _babel_types.isJSXMemberExpression(parent) && parentKey === "property") return; | ||
| const first = current.name[0]; | ||
| if (first && first === first.toLowerCase()) return; | ||
| if (!hasIdentifierBinding(scopes, current.name)) ids.add(current.name); | ||
| return; | ||
| } | ||
| if (_babel_types.isProgram(current)) { | ||
| const nestedScopes = createNestedIdentifierScope("program", scopes); | ||
| addIdentifierBlockBindings(current.body, nestedScopes); | ||
| for (const child of current.body) walkIdentifierNode(child, current, parent, "body", nestedScopes, ids); | ||
| return; | ||
| } | ||
| if (_babel_types.isBlockStatement(current)) { | ||
| const nestedScopes = createNestedIdentifierScope("block", scopes); | ||
| addIdentifierBlockBindings(current.body, nestedScopes); | ||
| for (const child of current.body) walkIdentifierNode(child, current, parent, "body", nestedScopes, ids); | ||
| return; | ||
| } | ||
| if (_babel_types.isFunctionDeclaration(current) || _babel_types.isFunctionExpression(current) || _babel_types.isArrowFunctionExpression(current) || _babel_types.isObjectMethod(current) || _babel_types.isClassMethod(current) || _babel_types.isClassPrivateMethod(current)) { | ||
| if (_babel_types.isFunctionDeclaration(current) && current.id) currentIdentifierScope(scopes).bindings.add(current.id.name); | ||
| const nestedScopes = createNestedIdentifierScope("function", scopes); | ||
| if ((_babel_types.isFunctionDeclaration(current) || _babel_types.isFunctionExpression(current)) && current.id) currentIdentifierScope(nestedScopes).bindings.add(current.id.name); | ||
| for (const param of current.params) addIdentifierPatternBindings(param, currentIdentifierScope(nestedScopes)); | ||
| walkIdentifierChildren(current, parent, nestedScopes, ids); | ||
| return; | ||
| } | ||
| if (_babel_types.isCatchClause(current)) { | ||
| const nestedScopes = createNestedIdentifierScope("block", scopes); | ||
| addIdentifierPatternBindings(current.param, currentIdentifierScope(nestedScopes)); | ||
| walkIdentifierNode(current.param, current, parent, "param", nestedScopes, ids); | ||
| walkIdentifierNode(current.body, current, parent, "body", nestedScopes, ids); | ||
| return; | ||
| } | ||
| if (_babel_types.isImportDeclaration(current)) { | ||
| addIdentifierImportBindings(current, currentIdentifierScope(scopes)); | ||
| return; | ||
| } | ||
| if (_babel_types.isClassDeclaration(current) || _babel_types.isClassExpression(current)) { | ||
| if (_babel_types.isClassDeclaration(current) && current.id) currentIdentifierScope(scopes).bindings.add(current.id.name); | ||
| const nestedScopes = current.id ? createNestedIdentifierScope("block", scopes) : scopes; | ||
| if (current.id) currentIdentifierScope(nestedScopes).bindings.add(current.id.name); | ||
| walkIdentifierChildren(current, parent, nestedScopes, ids); | ||
| return; | ||
| } | ||
| if (_babel_types.isVariableDeclaration(current)) addIdentifierDeclarationBindings(current, scopes); | ||
| else if (_babel_types.isVariableDeclarator(current)) { | ||
| const scope = parent && _babel_types.isVariableDeclaration(parent) && parent.kind === "var" ? nearestFunctionIdentifierScope(scopes) : currentIdentifierScope(scopes); | ||
| addIdentifierPatternBindings(current.id, scope); | ||
| } else if (_babel_types.isTSTypeAliasDeclaration(current) || _babel_types.isTSInterfaceDeclaration(current) || _babel_types.isTSEnumDeclaration(current)) currentIdentifierScope(scopes).bindings.add(current.id.name); | ||
| walkIdentifierChildren(current, parent, scopes, ids); | ||
| } | ||
| /** | ||
| * Recursively walk an AST node and collect referenced identifier-like names. | ||
| * This avoids Babel path/scope allocation for module-level dependency scans. | ||
| */ | ||
| function collectIdentifiersFromNode(node) { | ||
| const ids = /* @__PURE__ */ new Set(); | ||
| walkIdentifierNode(node, void 0, void 0, void 0, [{ | ||
| kind: "program", | ||
| bindings: /* @__PURE__ */ new Set() | ||
| }], ids); | ||
| return ids; | ||
| } | ||
| function collectIdentifiersFromPattern(node) { | ||
| if (!node) return []; | ||
| if (_babel_types.isIdentifier(node)) return [node.name]; | ||
| if (_babel_types.isAssignmentPattern(node)) return collectIdentifiersFromPattern(node.left); | ||
| if (_babel_types.isRestElement(node)) return collectIdentifiersFromPattern(node.argument); | ||
| if (_babel_types.isObjectPattern(node)) return node.properties.flatMap((prop) => { | ||
| if (_babel_types.isObjectProperty(prop)) return collectIdentifiersFromPattern(prop.value); | ||
| if (_babel_types.isRestElement(prop)) return collectIdentifiersFromPattern(prop.argument); | ||
| return []; | ||
| }); | ||
| if (_babel_types.isArrayPattern(node)) return node.elements.flatMap((element) => collectIdentifiersFromPattern(element)); | ||
| return []; | ||
| } | ||
| function collectLocalBindingsFromStatement(node, bindings) { | ||
| const declaration = _babel_types.isExportNamedDeclaration(node) && node.declaration ? node.declaration : _babel_types.isExportDefaultDeclaration(node) ? node.declaration : node; | ||
| if (_babel_types.isVariableDeclaration(declaration)) for (const declarator of declaration.declarations) for (const name of collectIdentifiersFromPattern(declarator.id)) bindings.add(name); | ||
| else if (_babel_types.isFunctionDeclaration(declaration) && declaration.id) bindings.add(declaration.id.name); | ||
| else if (_babel_types.isClassDeclaration(declaration) && declaration.id) bindings.add(declaration.id.name); | ||
| } | ||
| function extractModuleInfoFromAst(ast) { | ||
| const bindings = /* @__PURE__ */ new Map(); | ||
| const exportMap = /* @__PURE__ */ new Map(); | ||
| const reExportAllSources = []; | ||
| for (const node of ast.program.body) { | ||
| if (_babel_types.isImportDeclaration(node)) { | ||
| const source = node.source.value; | ||
| for (const specifier of node.specifiers) if (_babel_types.isImportSpecifier(specifier)) bindings.set(specifier.local.name, { | ||
| type: "import", | ||
| source, | ||
| importedName: getModuleExportName(specifier.imported) | ||
| }); | ||
| else if (_babel_types.isImportDefaultSpecifier(specifier)) bindings.set(specifier.local.name, { | ||
| type: "import", | ||
| source, | ||
| importedName: "default" | ||
| }); | ||
| else if (_babel_types.isImportNamespaceSpecifier(specifier)) bindings.set(specifier.local.name, { | ||
| type: "import", | ||
| source, | ||
| importedName: "*" | ||
| }); | ||
| continue; | ||
| } | ||
| if (_babel_types.isVariableDeclaration(node)) { | ||
| addVariableDeclarationModuleInfo(node, bindings); | ||
| continue; | ||
| } | ||
| if (_babel_types.isFunctionDeclaration(node) || _babel_types.isClassDeclaration(node)) { | ||
| addDeclarationModuleInfo(node, bindings); | ||
| continue; | ||
| } | ||
| if (_babel_types.isExportNamedDeclaration(node)) { | ||
| if (node.declaration) addDeclarationModuleInfo(node.declaration, bindings, exportMap); | ||
| for (const specifier of node.specifiers) if (_babel_types.isExportNamespaceSpecifier(specifier)) { | ||
| const exported = getModuleExportName(specifier.exported); | ||
| exportMap.set(exported, exported); | ||
| if (node.source) bindings.set(exported, { | ||
| type: "import", | ||
| source: node.source.value, | ||
| importedName: "*" | ||
| }); | ||
| } else if (_babel_types.isExportSpecifier(specifier)) { | ||
| const local = getModuleExportName(specifier.local); | ||
| const exported = getModuleExportName(specifier.exported); | ||
| exportMap.set(exported, local); | ||
| if (node.source) bindings.set(local, { | ||
| type: "import", | ||
| source: node.source.value, | ||
| importedName: local | ||
| }); | ||
| } | ||
| continue; | ||
| } | ||
| if (_babel_types.isExportDefaultDeclaration(node)) { | ||
| const declaration = node.declaration; | ||
| if (_babel_types.isIdentifier(declaration)) exportMap.set("default", declaration.name); | ||
| else if ((_babel_types.isFunctionDeclaration(declaration) || _babel_types.isClassDeclaration(declaration)) && declaration.id) { | ||
| bindings.set(declaration.id.name, { | ||
| type: "var", | ||
| init: null | ||
| }); | ||
| exportMap.set("default", declaration.id.name); | ||
| } else { | ||
| const synth = "__default_export__"; | ||
| bindings.set(synth, { | ||
| type: "var", | ||
| init: _babel_types.isExpression(declaration) ? declaration : null | ||
| }); | ||
| exportMap.set("default", synth); | ||
| } | ||
| continue; | ||
| } | ||
| if (_babel_types.isExportAllDeclaration(node)) reExportAllSources.push(node.source.value); | ||
| } | ||
| return { | ||
| bindings, | ||
| exports: exportMap, | ||
| reExportAllSources | ||
| }; | ||
| } | ||
| function buildDeclarationMap(ast) { | ||
| const map = /* @__PURE__ */ new Map(); | ||
| for (const statement of ast.program.body) { | ||
| const declaration = _babel_types.isExportNamedDeclaration(statement) && statement.declaration ? statement.declaration : _babel_types.isExportDefaultDeclaration(statement) ? statement.declaration : statement; | ||
| if (_babel_types.isVariableDeclaration(declaration)) for (const declarator of declaration.declarations) for (const name of collectIdentifiersFromPattern(declarator.id)) map.set(name, declarator); | ||
| else if (_babel_types.isFunctionDeclaration(declaration) && declaration.id) map.set(declaration.id.name, declaration); | ||
| else if (_babel_types.isClassDeclaration(declaration) && declaration.id) map.set(declaration.id.name, declaration); | ||
| } | ||
| return map; | ||
| } | ||
| function buildDependencyGraph(declarationMap, localBindings) { | ||
| const graph = /* @__PURE__ */ new Map(); | ||
| for (const [name, declarationNode] of declarationMap) { | ||
| if (!localBindings.has(name)) continue; | ||
| const dependencies = /* @__PURE__ */ new Set(); | ||
| for (const id of collectIdentifiersFromNode(declarationNode)) if (id !== name && localBindings.has(id)) dependencies.add(id); | ||
| graph.set(name, dependencies); | ||
| } | ||
| return graph; | ||
| } | ||
| function collectModuleLevelRefsFromNode(node, localModuleLevelBindings) { | ||
| const refs = /* @__PURE__ */ new Set(); | ||
| for (const name of collectIdentifiersFromNode(node)) if (localModuleLevelBindings.has(name)) refs.add(name); | ||
| return refs; | ||
| } | ||
| function expandTransitively(bindings, dependencyGraph) { | ||
| const queue = [...bindings]; | ||
| const visited = /* @__PURE__ */ new Set(); | ||
| while (queue.length > 0) { | ||
| const name = queue.pop(); | ||
| if (visited.has(name)) continue; | ||
| visited.add(name); | ||
| const dependencies = dependencyGraph.get(name); | ||
| if (!dependencies) continue; | ||
| for (const dependency of dependencies) if (!bindings.has(dependency)) { | ||
| bindings.add(dependency); | ||
| queue.push(dependency); | ||
| } | ||
| } | ||
| } | ||
| function expandSharedDestructuredDeclarators(ast, refsByGroup, sharedBindings) { | ||
| for (const statement of ast.program.body) { | ||
| const declaration = _babel_types.isExportNamedDeclaration(statement) && statement.declaration ? statement.declaration : statement; | ||
| if (!_babel_types.isVariableDeclaration(declaration)) continue; | ||
| for (const declarator of declaration.declarations) { | ||
| if (!_babel_types.isObjectPattern(declarator.id) && !_babel_types.isArrayPattern(declarator.id)) continue; | ||
| const names = collectIdentifiersFromPattern(declarator.id); | ||
| const usedGroups = /* @__PURE__ */ new Set(); | ||
| for (const name of names) { | ||
| const groups = refsByGroup.get(name); | ||
| if (!groups) continue; | ||
| for (const group of groups) usedGroups.add(group); | ||
| } | ||
| if (usedGroups.size >= 2) for (const name of names) sharedBindings.add(name); | ||
| } | ||
| } | ||
| } | ||
| function expandDestructuredDeclarations(ast, bindings) { | ||
| for (const statement of ast.program.body) { | ||
| const declaration = _babel_types.isExportNamedDeclaration(statement) && statement.declaration ? statement.declaration : statement; | ||
| if (!_babel_types.isVariableDeclaration(declaration)) continue; | ||
| for (const declarator of declaration.declarations) { | ||
| if (!_babel_types.isObjectPattern(declarator.id) && !_babel_types.isArrayPattern(declarator.id)) continue; | ||
| const names = collectIdentifiersFromPattern(declarator.id); | ||
| if (names.some((name) => bindings.has(name))) for (const name of names) bindings.add(name); | ||
| } | ||
| } | ||
| } | ||
| function removeBindingsTransitivelyDependingOn(bindings, dependencyGraph, roots) { | ||
| const reverseGraph = /* @__PURE__ */ new Map(); | ||
| for (const [name, dependencies] of dependencyGraph) for (const dependency of dependencies) { | ||
| let parents = reverseGraph.get(dependency); | ||
| if (!parents) { | ||
| parents = /* @__PURE__ */ new Set(); | ||
| reverseGraph.set(dependency, parents); | ||
| } | ||
| parents.add(name); | ||
| } | ||
| const visited = /* @__PURE__ */ new Set(); | ||
| const queue = [...roots]; | ||
| while (queue.length > 0) { | ||
| const current = queue.pop(); | ||
| if (visited.has(current)) continue; | ||
| visited.add(current); | ||
| const parents = reverseGraph.get(current); | ||
| if (!parents) continue; | ||
| for (const parent of parents) if (!visited.has(parent)) queue.push(parent); | ||
| } | ||
| for (const name of [...bindings]) if (visited.has(name)) bindings.delete(name); | ||
| } | ||
| function removeModuleLevelBindings(ast, namesToRemove) { | ||
| ast.program.body = ast.program.body.filter((statement) => { | ||
| const declaration = _babel_types.isExportNamedDeclaration(statement) && statement.declaration ? statement.declaration : statement; | ||
| if (_babel_types.isVariableDeclaration(declaration)) { | ||
| declaration.declarations = declaration.declarations.filter((declarator) => !collectIdentifiersFromPattern(declarator.id).some((name) => namesToRemove.has(name))); | ||
| return declaration.declarations.length > 0; | ||
| } | ||
| if (_babel_types.isFunctionDeclaration(declaration) && declaration.id) return !namesToRemove.has(declaration.id.name); | ||
| if (_babel_types.isClassDeclaration(declaration) && declaration.id) return !namesToRemove.has(declaration.id.name); | ||
| if (_babel_types.isExportDefaultDeclaration(statement)) { | ||
| const defaultDeclaration = statement.declaration; | ||
| if ((_babel_types.isFunctionDeclaration(defaultDeclaration) || _babel_types.isClassDeclaration(defaultDeclaration)) && defaultDeclaration.id) return !namesToRemove.has(defaultDeclaration.id.name); | ||
| } | ||
| return true; | ||
| }); | ||
| } | ||
| function retainModuleLevelDeclarations(ast, bindingsToKeep) { | ||
| ast.program.body = ast.program.body.filter((statement) => { | ||
| if (_babel_types.isImportDeclaration(statement)) return true; | ||
| const declaration = _babel_types.isExportNamedDeclaration(statement) && statement.declaration ? statement.declaration : statement; | ||
| if (_babel_types.isVariableDeclaration(declaration)) { | ||
| declaration.declarations = declaration.declarations.filter((declarator) => collectIdentifiersFromPattern(declarator.id).some((name) => bindingsToKeep.has(name))); | ||
| return declaration.declarations.length > 0; | ||
| } | ||
| if (_babel_types.isFunctionDeclaration(declaration) && declaration.id) return bindingsToKeep.has(declaration.id.name); | ||
| if (_babel_types.isClassDeclaration(declaration) && declaration.id) return bindingsToKeep.has(declaration.id.name); | ||
| return false; | ||
| }); | ||
| } | ||
| function unwrapExportedDeclarations(ast) { | ||
| const body = []; | ||
| for (const statement of ast.program.body) { | ||
| if (_babel_types.isExportNamedDeclaration(statement)) { | ||
| if (statement.declaration) body.push(statement.declaration); | ||
| continue; | ||
| } | ||
| if (_babel_types.isExportDefaultDeclaration(statement)) { | ||
| const declaration = statement.declaration; | ||
| if ((_babel_types.isFunctionDeclaration(declaration) || _babel_types.isClassDeclaration(declaration)) && declaration.id) body.push(declaration); | ||
| continue; | ||
| } | ||
| if (_babel_types.isExportAllDeclaration(statement)) continue; | ||
| body.push(statement); | ||
| } | ||
| ast.program.body = body; | ||
| } | ||
| function stripUnreferencedTopLevelExpressionStatements(ast) { | ||
| const locallyBound = /* @__PURE__ */ new Set(); | ||
| for (const statement of ast.program.body) collectLocalBindingsFromStatement(statement, locallyBound); | ||
| ast.program.body = ast.program.body.filter((statement) => { | ||
| if (!_babel_types.isExpressionStatement(statement)) return true; | ||
| for (const name of collectIdentifiersFromNode(statement)) if (locallyBound.has(name)) return true; | ||
| return false; | ||
| }); | ||
| } | ||
| //#endregion | ||
| exports.buildDeclarationMap = buildDeclarationMap; | ||
| exports.buildDependencyGraph = buildDependencyGraph; | ||
| exports.collectIdentifiersFromNode = collectIdentifiersFromNode; | ||
| exports.collectIdentifiersFromPattern = collectIdentifiersFromPattern; | ||
| exports.collectLocalBindingsFromStatement = collectLocalBindingsFromStatement; | ||
| exports.collectModuleLevelRefsFromNode = collectModuleLevelRefsFromNode; | ||
| exports.expandDestructuredDeclarations = expandDestructuredDeclarations; | ||
| exports.expandSharedDestructuredDeclarators = expandSharedDestructuredDeclarators; | ||
| exports.expandTransitively = expandTransitively; | ||
| exports.extractModuleInfoFromAst = extractModuleInfoFromAst; | ||
| exports.removeBindingsTransitivelyDependingOn = removeBindingsTransitivelyDependingOn; | ||
| exports.removeModuleLevelBindings = removeModuleLevelBindings; | ||
| exports.retainModuleLevelDeclarations = retainModuleLevelDeclarations; | ||
| exports.stripUnreferencedTopLevelExpressionStatements = stripUnreferencedTopLevelExpressionStatements; | ||
| exports.unwrapExportedDeclarations = unwrapExportedDeclarations; | ||
| //# sourceMappingURL=compiler-helpers.cjs.map |
| {"version":3,"file":"compiler-helpers.cjs","names":[],"sources":["../../src/compiler-helpers.ts"],"sourcesContent":["import * as t from '@babel/types'\n\ntype IdentifierScopeFrame = {\n kind: 'program' | 'function' | 'block'\n bindings: Set<string>\n}\ntype IdentifierScopeStack = Array<IdentifierScopeFrame>\n\nexport type ModuleInfoBinding =\n | {\n type: 'import'\n source: string\n importedName: string\n }\n | {\n type: 'var'\n init: t.Expression | null\n }\n\nexport interface ExtractedModuleInfo {\n bindings: Map<string, ModuleInfoBinding>\n exports: Map<string, string>\n reExportAllSources: Array<string>\n}\n\nfunction getModuleExportName(node: t.Identifier | t.StringLiteral) {\n return t.isIdentifier(node) ? node.name : node.value\n}\n\nfunction addVariableDeclarationModuleInfo(\n declaration: t.VariableDeclaration,\n bindings: Map<string, ModuleInfoBinding>,\n exportMap?: Map<string, string>,\n) {\n for (const declarator of declaration.declarations) {\n for (const name of collectIdentifiersFromPattern(declarator.id)) {\n bindings.set(name, {\n type: 'var',\n init: declarator.init ?? null,\n })\n exportMap?.set(name, name)\n }\n }\n}\n\nfunction addDeclarationModuleInfo(\n declaration: t.Declaration,\n bindings: Map<string, ModuleInfoBinding>,\n exportMap?: Map<string, string>,\n) {\n if (t.isVariableDeclaration(declaration)) {\n addVariableDeclarationModuleInfo(declaration, bindings, exportMap)\n return\n }\n\n if (\n (t.isFunctionDeclaration(declaration) ||\n t.isClassDeclaration(declaration)) &&\n declaration.id\n ) {\n bindings.set(declaration.id.name, {\n type: 'var',\n init: null,\n })\n exportMap?.set(declaration.id.name, declaration.id.name)\n }\n}\n\nfunction hasIdentifierBinding(scopes: IdentifierScopeStack, name: string) {\n for (let i = scopes.length - 1; i >= 0; i--) {\n if (scopes[i]!.bindings.has(name)) {\n return true\n }\n }\n return false\n}\n\nfunction currentIdentifierScope(scopes: IdentifierScopeStack) {\n return scopes[scopes.length - 1]!\n}\n\nfunction nearestFunctionIdentifierScope(scopes: IdentifierScopeStack) {\n for (let i = scopes.length - 1; i >= 0; i--) {\n const scope = scopes[i]!\n if (scope.kind === 'function' || scope.kind === 'program') {\n return scope\n }\n }\n return currentIdentifierScope(scopes)\n}\n\nfunction addIdentifierPatternBindings(\n pattern: t.LVal | t.Node | null | undefined,\n scope: IdentifierScopeFrame,\n) {\n for (const name of collectIdentifiersFromPattern(pattern)) {\n scope.bindings.add(name)\n }\n}\n\nfunction addIdentifierDeclarationBindings(\n declaration: t.Node,\n scopes: IdentifierScopeStack,\n) {\n if (t.isVariableDeclaration(declaration)) {\n const scope =\n declaration.kind === 'var'\n ? nearestFunctionIdentifierScope(scopes)\n : currentIdentifierScope(scopes)\n for (const declarator of declaration.declarations) {\n addIdentifierPatternBindings(declarator.id, scope)\n }\n return\n }\n\n if (\n (t.isFunctionDeclaration(declaration) ||\n t.isClassDeclaration(declaration) ||\n t.isTSTypeAliasDeclaration(declaration) ||\n t.isTSInterfaceDeclaration(declaration) ||\n t.isTSEnumDeclaration(declaration)) &&\n declaration.id\n ) {\n currentIdentifierScope(scopes).bindings.add(declaration.id.name)\n }\n}\n\nfunction addIdentifierImportBindings(\n node: t.ImportDeclaration,\n scope: IdentifierScopeFrame,\n) {\n for (const specifier of node.specifiers) {\n scope.bindings.add(specifier.local.name)\n }\n}\n\nfunction createNestedIdentifierScope(\n kind: IdentifierScopeFrame['kind'],\n scopes: IdentifierScopeStack,\n): IdentifierScopeStack {\n return [...scopes, { kind, bindings: new Set() }]\n}\n\nfunction addIdentifierBlockBindings(\n body: Array<t.Node>,\n scopes: IdentifierScopeStack,\n) {\n for (const statement of body) {\n if (t.isImportDeclaration(statement)) {\n addIdentifierImportBindings(statement, currentIdentifierScope(scopes))\n } else if (t.isExportNamedDeclaration(statement) && statement.declaration) {\n addIdentifierDeclarationBindings(statement.declaration, scopes)\n } else {\n addIdentifierDeclarationBindings(statement, scopes)\n }\n }\n}\n\nfunction walkIdentifierChildren(\n current: t.Node,\n parent: t.Node | undefined,\n scopes: IdentifierScopeStack,\n ids: Set<string>,\n) {\n for (const key of t.VISITOR_KEYS[current.type] ?? []) {\n const child = (current as any)[key]\n if (Array.isArray(child)) {\n for (const item of child) {\n if (item && typeof item.type === 'string') {\n walkIdentifierNode(item, current, parent, key, scopes, ids)\n }\n }\n } else if (child && typeof child.type === 'string') {\n walkIdentifierNode(child, current, parent, key, scopes, ids)\n }\n }\n}\n\nfunction walkIdentifierNode(\n current: t.Node | null | undefined,\n parent: t.Node | undefined,\n grandparent: t.Node | undefined,\n parentKey: string | undefined,\n scopes: IdentifierScopeStack,\n ids: Set<string>,\n) {\n if (!current) return\n\n if (t.isIdentifier(current)) {\n if (\n (!parent || t.isReferenced(current, parent, grandparent)) &&\n !hasIdentifierBinding(scopes, current.name)\n ) {\n ids.add(current.name)\n }\n return\n }\n\n if (t.isJSXIdentifier(current)) {\n if (parent && t.isJSXAttribute(parent) && parentKey === 'name') {\n return\n }\n\n if (parent && t.isJSXMemberExpression(parent) && parentKey === 'property') {\n return\n }\n\n const first = current.name[0]\n if (first && first === first.toLowerCase()) {\n return\n }\n\n if (!hasIdentifierBinding(scopes, current.name)) {\n ids.add(current.name)\n }\n return\n }\n\n if (t.isProgram(current)) {\n const nestedScopes = createNestedIdentifierScope('program', scopes)\n addIdentifierBlockBindings(current.body, nestedScopes)\n for (const child of current.body) {\n walkIdentifierNode(child, current, parent, 'body', nestedScopes, ids)\n }\n return\n }\n\n if (t.isBlockStatement(current)) {\n const nestedScopes = createNestedIdentifierScope('block', scopes)\n addIdentifierBlockBindings(current.body, nestedScopes)\n for (const child of current.body) {\n walkIdentifierNode(child, current, parent, 'body', nestedScopes, ids)\n }\n return\n }\n\n if (\n t.isFunctionDeclaration(current) ||\n t.isFunctionExpression(current) ||\n t.isArrowFunctionExpression(current) ||\n t.isObjectMethod(current) ||\n t.isClassMethod(current) ||\n t.isClassPrivateMethod(current)\n ) {\n if (t.isFunctionDeclaration(current) && current.id) {\n currentIdentifierScope(scopes).bindings.add(current.id.name)\n }\n\n const nestedScopes = createNestedIdentifierScope('function', scopes)\n if (\n (t.isFunctionDeclaration(current) || t.isFunctionExpression(current)) &&\n current.id\n ) {\n currentIdentifierScope(nestedScopes).bindings.add(current.id.name)\n }\n for (const param of current.params) {\n addIdentifierPatternBindings(param, currentIdentifierScope(nestedScopes))\n }\n\n walkIdentifierChildren(current, parent, nestedScopes, ids)\n return\n }\n\n if (t.isCatchClause(current)) {\n const nestedScopes = createNestedIdentifierScope('block', scopes)\n addIdentifierPatternBindings(\n current.param,\n currentIdentifierScope(nestedScopes),\n )\n walkIdentifierNode(\n current.param,\n current,\n parent,\n 'param',\n nestedScopes,\n ids,\n )\n walkIdentifierNode(current.body, current, parent, 'body', nestedScopes, ids)\n return\n }\n\n if (t.isImportDeclaration(current)) {\n addIdentifierImportBindings(current, currentIdentifierScope(scopes))\n return\n }\n\n if (t.isClassDeclaration(current) || t.isClassExpression(current)) {\n if (t.isClassDeclaration(current) && current.id) {\n currentIdentifierScope(scopes).bindings.add(current.id.name)\n }\n\n const nestedScopes = current.id\n ? createNestedIdentifierScope('block', scopes)\n : scopes\n if (current.id) {\n currentIdentifierScope(nestedScopes).bindings.add(current.id.name)\n }\n\n walkIdentifierChildren(current, parent, nestedScopes, ids)\n return\n }\n\n if (t.isVariableDeclaration(current)) {\n addIdentifierDeclarationBindings(current, scopes)\n } else if (t.isVariableDeclarator(current)) {\n const scope =\n parent && t.isVariableDeclaration(parent) && parent.kind === 'var'\n ? nearestFunctionIdentifierScope(scopes)\n : currentIdentifierScope(scopes)\n addIdentifierPatternBindings(current.id, scope)\n } else if (\n t.isTSTypeAliasDeclaration(current) ||\n t.isTSInterfaceDeclaration(current) ||\n t.isTSEnumDeclaration(current)\n ) {\n currentIdentifierScope(scopes).bindings.add(current.id.name)\n }\n\n walkIdentifierChildren(current, parent, scopes, ids)\n}\n\n/**\n * Recursively walk an AST node and collect referenced identifier-like names.\n * This avoids Babel path/scope allocation for module-level dependency scans.\n */\nexport function collectIdentifiersFromNode(node: t.Node): Set<string> {\n const ids = new Set<string>()\n walkIdentifierNode(\n node,\n undefined,\n undefined,\n undefined,\n [{ kind: 'program', bindings: new Set() }],\n ids,\n )\n return ids\n}\n\nexport function collectIdentifiersFromPattern(\n node: t.LVal | t.Node | null | undefined,\n): Array<string> {\n if (!node) {\n return []\n }\n\n if (t.isIdentifier(node)) {\n return [node.name]\n }\n\n if (t.isAssignmentPattern(node)) {\n return collectIdentifiersFromPattern(node.left)\n }\n\n if (t.isRestElement(node)) {\n return collectIdentifiersFromPattern(node.argument)\n }\n\n if (t.isObjectPattern(node)) {\n return node.properties.flatMap((prop) => {\n if (t.isObjectProperty(prop)) {\n return collectIdentifiersFromPattern(prop.value as t.LVal)\n }\n if (t.isRestElement(prop)) {\n return collectIdentifiersFromPattern(prop.argument)\n }\n return []\n })\n }\n\n if (t.isArrayPattern(node)) {\n return node.elements.flatMap((element) =>\n collectIdentifiersFromPattern(element),\n )\n }\n\n return []\n}\n\nexport function collectLocalBindingsFromStatement(\n node: t.Statement | t.ModuleDeclaration,\n bindings: Set<string>,\n) {\n const declaration =\n t.isExportNamedDeclaration(node) && node.declaration\n ? node.declaration\n : t.isExportDefaultDeclaration(node)\n ? node.declaration\n : node\n\n if (t.isVariableDeclaration(declaration)) {\n for (const declarator of declaration.declarations) {\n for (const name of collectIdentifiersFromPattern(declarator.id)) {\n bindings.add(name)\n }\n }\n } else if (t.isFunctionDeclaration(declaration) && declaration.id) {\n bindings.add(declaration.id.name)\n } else if (t.isClassDeclaration(declaration) && declaration.id) {\n bindings.add(declaration.id.name)\n }\n}\n\nexport function extractModuleInfoFromAst(ast: t.File): ExtractedModuleInfo {\n const bindings = new Map<string, ModuleInfoBinding>()\n const exportMap = new Map<string, string>()\n const reExportAllSources: Array<string> = []\n\n for (const node of ast.program.body) {\n if (t.isImportDeclaration(node)) {\n const source = node.source.value\n for (const specifier of node.specifiers) {\n if (t.isImportSpecifier(specifier)) {\n bindings.set(specifier.local.name, {\n type: 'import',\n source,\n importedName: getModuleExportName(specifier.imported),\n })\n } else if (t.isImportDefaultSpecifier(specifier)) {\n bindings.set(specifier.local.name, {\n type: 'import',\n source,\n importedName: 'default',\n })\n } else if (t.isImportNamespaceSpecifier(specifier)) {\n bindings.set(specifier.local.name, {\n type: 'import',\n source,\n importedName: '*',\n })\n }\n }\n continue\n }\n\n if (t.isVariableDeclaration(node)) {\n addVariableDeclarationModuleInfo(node, bindings)\n continue\n }\n\n if (t.isFunctionDeclaration(node) || t.isClassDeclaration(node)) {\n addDeclarationModuleInfo(node, bindings)\n continue\n }\n\n if (t.isExportNamedDeclaration(node)) {\n if (node.declaration) {\n addDeclarationModuleInfo(node.declaration, bindings, exportMap)\n }\n\n for (const specifier of node.specifiers) {\n if (t.isExportNamespaceSpecifier(specifier)) {\n const exported = getModuleExportName(specifier.exported)\n exportMap.set(exported, exported)\n if (node.source) {\n bindings.set(exported, {\n type: 'import',\n source: node.source.value,\n importedName: '*',\n })\n }\n } else if (t.isExportSpecifier(specifier)) {\n const local = getModuleExportName(specifier.local)\n const exported = getModuleExportName(specifier.exported)\n exportMap.set(exported, local)\n\n if (node.source) {\n bindings.set(local, {\n type: 'import',\n source: node.source.value,\n importedName: local,\n })\n }\n }\n }\n continue\n }\n\n if (t.isExportDefaultDeclaration(node)) {\n const declaration = node.declaration\n if (t.isIdentifier(declaration)) {\n exportMap.set('default', declaration.name)\n } else if (\n (t.isFunctionDeclaration(declaration) ||\n t.isClassDeclaration(declaration)) &&\n declaration.id\n ) {\n bindings.set(declaration.id.name, {\n type: 'var',\n init: null,\n })\n exportMap.set('default', declaration.id.name)\n } else {\n const synth = '__default_export__'\n bindings.set(synth, {\n type: 'var',\n init: t.isExpression(declaration) ? declaration : null,\n })\n exportMap.set('default', synth)\n }\n continue\n }\n\n if (t.isExportAllDeclaration(node)) {\n reExportAllSources.push(node.source.value)\n }\n }\n\n return {\n bindings,\n exports: exportMap,\n reExportAllSources,\n }\n}\n\nexport function buildDeclarationMap(ast: t.File): Map<string, t.Node> {\n const map = new Map<string, t.Node>()\n\n for (const statement of ast.program.body) {\n const declaration =\n t.isExportNamedDeclaration(statement) && statement.declaration\n ? statement.declaration\n : t.isExportDefaultDeclaration(statement)\n ? statement.declaration\n : statement\n\n if (t.isVariableDeclaration(declaration)) {\n for (const declarator of declaration.declarations) {\n for (const name of collectIdentifiersFromPattern(declarator.id)) {\n map.set(name, declarator)\n }\n }\n } else if (t.isFunctionDeclaration(declaration) && declaration.id) {\n map.set(declaration.id.name, declaration)\n } else if (t.isClassDeclaration(declaration) && declaration.id) {\n map.set(declaration.id.name, declaration)\n }\n }\n\n return map\n}\n\nexport function buildDependencyGraph(\n declarationMap: Map<string, t.Node>,\n localBindings: Set<string>,\n): Map<string, Set<string>> {\n const graph = new Map<string, Set<string>>()\n\n for (const [name, declarationNode] of declarationMap) {\n if (!localBindings.has(name)) continue\n\n const dependencies = new Set<string>()\n for (const id of collectIdentifiersFromNode(declarationNode)) {\n if (id !== name && localBindings.has(id)) {\n dependencies.add(id)\n }\n }\n graph.set(name, dependencies)\n }\n\n return graph\n}\n\nexport function collectModuleLevelRefsFromNode(\n node: t.Node,\n localModuleLevelBindings: Set<string>,\n): Set<string> {\n const refs = new Set<string>()\n\n for (const name of collectIdentifiersFromNode(node)) {\n if (localModuleLevelBindings.has(name)) {\n refs.add(name)\n }\n }\n\n return refs\n}\n\nexport function expandTransitively(\n bindings: Set<string>,\n dependencyGraph: Map<string, Set<string>>,\n) {\n const queue = [...bindings]\n const visited = new Set<string>()\n\n while (queue.length > 0) {\n const name = queue.pop()!\n if (visited.has(name)) continue\n visited.add(name)\n\n const dependencies = dependencyGraph.get(name)\n if (!dependencies) continue\n\n for (const dependency of dependencies) {\n if (!bindings.has(dependency)) {\n bindings.add(dependency)\n queue.push(dependency)\n }\n }\n }\n}\n\nexport function expandSharedDestructuredDeclarators(\n ast: t.File,\n refsByGroup: Map<string, Set<number>>,\n sharedBindings: Set<string>,\n) {\n for (const statement of ast.program.body) {\n const declaration =\n t.isExportNamedDeclaration(statement) && statement.declaration\n ? statement.declaration\n : statement\n\n if (!t.isVariableDeclaration(declaration)) continue\n\n for (const declarator of declaration.declarations) {\n if (\n !t.isObjectPattern(declarator.id) &&\n !t.isArrayPattern(declarator.id)\n ) {\n continue\n }\n\n const names = collectIdentifiersFromPattern(declarator.id)\n const usedGroups = new Set<number>()\n\n for (const name of names) {\n const groups = refsByGroup.get(name)\n if (!groups) continue\n for (const group of groups) {\n usedGroups.add(group)\n }\n }\n\n if (usedGroups.size >= 2) {\n for (const name of names) {\n sharedBindings.add(name)\n }\n }\n }\n }\n}\n\nexport function expandDestructuredDeclarations(\n ast: t.File,\n bindings: Set<string>,\n) {\n for (const statement of ast.program.body) {\n const declaration =\n t.isExportNamedDeclaration(statement) && statement.declaration\n ? statement.declaration\n : statement\n\n if (!t.isVariableDeclaration(declaration)) continue\n\n for (const declarator of declaration.declarations) {\n if (\n !t.isObjectPattern(declarator.id) &&\n !t.isArrayPattern(declarator.id)\n ) {\n continue\n }\n\n const names = collectIdentifiersFromPattern(declarator.id)\n if (names.some((name) => bindings.has(name))) {\n for (const name of names) {\n bindings.add(name)\n }\n }\n }\n }\n}\n\nexport function removeBindingsTransitivelyDependingOn(\n bindings: Set<string>,\n dependencyGraph: Map<string, Set<string>>,\n roots: Iterable<string>,\n) {\n const reverseGraph = new Map<string, Set<string>>()\n\n for (const [name, dependencies] of dependencyGraph) {\n for (const dependency of dependencies) {\n let parents = reverseGraph.get(dependency)\n if (!parents) {\n parents = new Set()\n reverseGraph.set(dependency, parents)\n }\n parents.add(name)\n }\n }\n\n const visited = new Set<string>()\n const queue = [...roots]\n\n while (queue.length > 0) {\n const current = queue.pop()!\n if (visited.has(current)) continue\n visited.add(current)\n\n const parents = reverseGraph.get(current)\n if (!parents) continue\n\n for (const parent of parents) {\n if (!visited.has(parent)) {\n queue.push(parent)\n }\n }\n }\n\n for (const name of [...bindings]) {\n if (visited.has(name)) {\n bindings.delete(name)\n }\n }\n}\n\nexport function removeModuleLevelBindings(\n ast: t.File,\n namesToRemove: Set<string>,\n) {\n ast.program.body = ast.program.body.filter((statement) => {\n const declaration =\n t.isExportNamedDeclaration(statement) && statement.declaration\n ? statement.declaration\n : statement\n\n if (t.isVariableDeclaration(declaration)) {\n declaration.declarations = declaration.declarations.filter(\n (declarator) =>\n !collectIdentifiersFromPattern(declarator.id).some((name) =>\n namesToRemove.has(name),\n ),\n )\n return declaration.declarations.length > 0\n }\n\n if (t.isFunctionDeclaration(declaration) && declaration.id) {\n return !namesToRemove.has(declaration.id.name)\n }\n\n if (t.isClassDeclaration(declaration) && declaration.id) {\n return !namesToRemove.has(declaration.id.name)\n }\n\n if (t.isExportDefaultDeclaration(statement)) {\n const defaultDeclaration = statement.declaration\n if (\n (t.isFunctionDeclaration(defaultDeclaration) ||\n t.isClassDeclaration(defaultDeclaration)) &&\n defaultDeclaration.id\n ) {\n return !namesToRemove.has(defaultDeclaration.id.name)\n }\n }\n\n return true\n })\n}\n\nexport function retainModuleLevelDeclarations(\n ast: t.File,\n bindingsToKeep: Set<string>,\n) {\n ast.program.body = ast.program.body.filter((statement) => {\n if (t.isImportDeclaration(statement)) return true\n\n const declaration =\n t.isExportNamedDeclaration(statement) && statement.declaration\n ? statement.declaration\n : statement\n\n if (t.isVariableDeclaration(declaration)) {\n declaration.declarations = declaration.declarations.filter((declarator) =>\n collectIdentifiersFromPattern(declarator.id).some((name) =>\n bindingsToKeep.has(name),\n ),\n )\n return declaration.declarations.length > 0\n }\n\n if (t.isFunctionDeclaration(declaration) && declaration.id) {\n return bindingsToKeep.has(declaration.id.name)\n }\n\n if (t.isClassDeclaration(declaration) && declaration.id) {\n return bindingsToKeep.has(declaration.id.name)\n }\n\n return false\n })\n}\n\nexport function unwrapExportedDeclarations(ast: t.File) {\n const body: Array<t.Statement | t.ModuleDeclaration> = []\n\n for (const statement of ast.program.body) {\n if (t.isExportNamedDeclaration(statement)) {\n if (statement.declaration) {\n body.push(statement.declaration)\n }\n continue\n }\n\n if (t.isExportDefaultDeclaration(statement)) {\n const declaration = statement.declaration\n if (\n (t.isFunctionDeclaration(declaration) ||\n t.isClassDeclaration(declaration)) &&\n declaration.id\n ) {\n body.push(declaration)\n }\n continue\n }\n\n if (t.isExportAllDeclaration(statement)) {\n continue\n }\n\n body.push(statement)\n }\n\n ast.program.body = body\n}\n\nexport function stripUnreferencedTopLevelExpressionStatements(ast: t.File) {\n const locallyBound = new Set<string>()\n\n for (const statement of ast.program.body) {\n collectLocalBindingsFromStatement(statement, locallyBound)\n }\n\n ast.program.body = ast.program.body.filter((statement) => {\n if (!t.isExpressionStatement(statement)) return true\n\n for (const name of collectIdentifiersFromNode(statement)) {\n if (locallyBound.has(name)) {\n return true\n }\n }\n\n return false\n 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|
| import * as t from '@babel/types'; | ||
| export type ModuleInfoBinding = { | ||
| type: 'import'; | ||
| source: string; | ||
| importedName: string; | ||
| } | { | ||
| type: 'var'; | ||
| init: t.Expression | null; | ||
| }; | ||
| export interface ExtractedModuleInfo { | ||
| bindings: Map<string, ModuleInfoBinding>; | ||
| exports: Map<string, string>; | ||
| reExportAllSources: Array<string>; | ||
| } | ||
| /** | ||
| * Recursively walk an AST node and collect referenced identifier-like names. | ||
| * This avoids Babel path/scope allocation for module-level dependency scans. | ||
| */ | ||
| export declare function collectIdentifiersFromNode(node: t.Node): Set<string>; | ||
| export declare function collectIdentifiersFromPattern(node: t.LVal | t.Node | null | undefined): Array<string>; | ||
| export declare function collectLocalBindingsFromStatement(node: t.Statement | t.ModuleDeclaration, bindings: Set<string>): void; | ||
| export declare function extractModuleInfoFromAst(ast: t.File): ExtractedModuleInfo; | ||
| export declare function buildDeclarationMap(ast: t.File): Map<string, t.Node>; | ||
| export declare function buildDependencyGraph(declarationMap: Map<string, t.Node>, localBindings: Set<string>): Map<string, Set<string>>; | ||
| export declare function collectModuleLevelRefsFromNode(node: t.Node, localModuleLevelBindings: Set<string>): Set<string>; | ||
| export declare function expandTransitively(bindings: Set<string>, dependencyGraph: Map<string, Set<string>>): void; | ||
| export declare function expandSharedDestructuredDeclarators(ast: t.File, refsByGroup: Map<string, Set<number>>, sharedBindings: Set<string>): void; | ||
| export declare function expandDestructuredDeclarations(ast: t.File, bindings: Set<string>): void; | ||
| export declare function removeBindingsTransitivelyDependingOn(bindings: Set<string>, dependencyGraph: Map<string, Set<string>>, roots: Iterable<string>): void; | ||
| export declare function removeModuleLevelBindings(ast: t.File, namesToRemove: Set<string>): void; | ||
| export declare function retainModuleLevelDeclarations(ast: t.File, bindingsToKeep: Set<string>): void; | ||
| export declare function unwrapExportedDeclarations(ast: t.File): void; | ||
| export declare function stripUnreferencedTopLevelExpressionStatements(ast: t.File): void; |
| //#region src/path-ids.ts | ||
| function createIdentifier(strings) { | ||
| if (strings.length === 0) throw new Error("Cannot create an identifier from an empty array"); | ||
| let safeString = [...strings].sort().join("---").replace(/\//g, "--slash--"); | ||
| safeString = safeString.replace(/\\/g, "--backslash--"); | ||
| safeString = safeString.replace(/\?/g, "--question--"); | ||
| safeString = safeString.replace(/%/g, "--percent--"); | ||
| safeString = safeString.replace(/#/g, "--hash--"); | ||
| safeString = safeString.replace(/\+/g, "--plus--"); | ||
| safeString = safeString.replace(/=/g, "--equals--"); | ||
| safeString = safeString.replace(/&/g, "--ampersand--"); | ||
| safeString = safeString.replace(/\s/g, "_"); | ||
| return safeString; | ||
| } | ||
| function decodeIdentifier(identifier) { | ||
| if (!identifier) return []; | ||
| let combinedString = identifier.replace(/--slash--/g, "/"); | ||
| combinedString = combinedString.replace(/--backslash--/g, "\\"); | ||
| combinedString = combinedString.replace(/--question--/g, "?"); | ||
| combinedString = combinedString.replace(/--percent--/g, "%"); | ||
| combinedString = combinedString.replace(/--hash--/g, "#"); | ||
| combinedString = combinedString.replace(/--plus--/g, "+"); | ||
| combinedString = combinedString.replace(/--equals--/g, "="); | ||
| combinedString = combinedString.replace(/--ampersand--/g, "&"); | ||
| combinedString = combinedString.replace(/_/g, " "); | ||
| return combinedString.split("---"); | ||
| } | ||
| //#endregion | ||
| exports.createIdentifier = createIdentifier; | ||
| exports.decodeIdentifier = decodeIdentifier; | ||
| //# sourceMappingURL=path-ids.cjs.map |
| {"version":3,"file":"path-ids.cjs","names":[],"sources":["../../src/path-ids.ts"],"sourcesContent":["export function createIdentifier(strings: Array<string>): string {\n if (strings.length === 0) {\n throw new Error('Cannot create an identifier from an empty array')\n }\n\n const sortedStrings = [...strings].sort()\n const combinedString = sortedStrings.join('---') // Delimiter\n\n // Replace unsafe characters\n let safeString = combinedString.replace(/\\//g, '--slash--')\n safeString = safeString.replace(/\\\\/g, '--backslash--')\n safeString = safeString.replace(/\\?/g, '--question--')\n safeString = safeString.replace(/%/g, '--percent--')\n safeString = safeString.replace(/#/g, '--hash--')\n safeString = safeString.replace(/\\+/g, '--plus--')\n safeString = safeString.replace(/=/g, '--equals--')\n safeString = safeString.replace(/&/g, '--ampersand--')\n safeString = safeString.replace(/\\s/g, '_') // Replace spaces with underscores\n\n return safeString\n}\n\nexport function decodeIdentifier(identifier: string): Array<string> {\n if (!identifier) {\n return []\n }\n\n let combinedString = identifier.replace(/--slash--/g, '/')\n combinedString = combinedString.replace(/--backslash--/g, '\\\\')\n combinedString = combinedString.replace(/--question--/g, '?')\n combinedString = combinedString.replace(/--percent--/g, '%')\n combinedString = combinedString.replace(/--hash--/g, '#')\n combinedString = combinedString.replace(/--plus--/g, '+')\n combinedString = combinedString.replace(/--equals--/g, '=')\n combinedString = combinedString.replace(/--ampersand--/g, '&')\n combinedString = combinedString.replace(/_/g, ' ') // Restore spaces\n\n return combinedString.split('---')\n}\n"],"mappings":";AAAA,SAAgB,iBAAiB,SAAgC;AAC/D,KAAI,QAAQ,WAAW,EACrB,OAAM,IAAI,MAAM,kDAAkD;CAOpE,IAAI,aAJkB,CAAC,GAAG,QAAQ,CAAC,MAAM,CACJ,KAAK,MAAM,CAGhB,QAAQ,OAAO,YAAY;AAC3D,cAAa,WAAW,QAAQ,OAAO,gBAAgB;AACvD,cAAa,WAAW,QAAQ,OAAO,eAAe;AACtD,cAAa,WAAW,QAAQ,MAAM,cAAc;AACpD,cAAa,WAAW,QAAQ,MAAM,WAAW;AACjD,cAAa,WAAW,QAAQ,OAAO,WAAW;AAClD,cAAa,WAAW,QAAQ,MAAM,aAAa;AACnD,cAAa,WAAW,QAAQ,MAAM,gBAAgB;AACtD,cAAa,WAAW,QAAQ,OAAO,IAAI;AAE3C,QAAO;;AAGT,SAAgB,iBAAiB,YAAmC;AAClE,KAAI,CAAC,WACH,QAAO,EAAE;CAGX,IAAI,iBAAiB,WAAW,QAAQ,cAAc,IAAI;AAC1D,kBAAiB,eAAe,QAAQ,kBAAkB,KAAK;AAC/D,kBAAiB,eAAe,QAAQ,iBAAiB,IAAI;AAC7D,kBAAiB,eAAe,QAAQ,gBAAgB,IAAI;AAC5D,kBAAiB,eAAe,QAAQ,aAAa,IAAI;AACzD,kBAAiB,eAAe,QAAQ,aAAa,IAAI;AACzD,kBAAiB,eAAe,QAAQ,eAAe,IAAI;AAC3D,kBAAiB,eAAe,QAAQ,kBAAkB,IAAI;AAC9D,kBAAiB,eAAe,QAAQ,MAAM,IAAI;AAElD,QAAO,eAAe,MAAM,MAAM"} |
| export declare function createIdentifier(strings: Array<string>): string; | ||
| export declare function decodeIdentifier(identifier: string): Array<string>; |
| import * as t from '@babel/types'; | ||
| export type ModuleInfoBinding = { | ||
| type: 'import'; | ||
| source: string; | ||
| importedName: string; | ||
| } | { | ||
| type: 'var'; | ||
| init: t.Expression | null; | ||
| }; | ||
| export interface ExtractedModuleInfo { | ||
| bindings: Map<string, ModuleInfoBinding>; | ||
| exports: Map<string, string>; | ||
| reExportAllSources: Array<string>; | ||
| } | ||
| /** | ||
| * Recursively walk an AST node and collect referenced identifier-like names. | ||
| * This avoids Babel path/scope allocation for module-level dependency scans. | ||
| */ | ||
| export declare function collectIdentifiersFromNode(node: t.Node): Set<string>; | ||
| export declare function collectIdentifiersFromPattern(node: t.LVal | t.Node | null | undefined): Array<string>; | ||
| export declare function collectLocalBindingsFromStatement(node: t.Statement | t.ModuleDeclaration, bindings: Set<string>): void; | ||
| export declare function extractModuleInfoFromAst(ast: t.File): ExtractedModuleInfo; | ||
| export declare function buildDeclarationMap(ast: t.File): Map<string, t.Node>; | ||
| export declare function buildDependencyGraph(declarationMap: Map<string, t.Node>, localBindings: Set<string>): Map<string, Set<string>>; | ||
| export declare function collectModuleLevelRefsFromNode(node: t.Node, localModuleLevelBindings: Set<string>): Set<string>; | ||
| export declare function expandTransitively(bindings: Set<string>, dependencyGraph: Map<string, Set<string>>): void; | ||
| export declare function expandSharedDestructuredDeclarators(ast: t.File, refsByGroup: Map<string, Set<number>>, sharedBindings: Set<string>): void; | ||
| export declare function expandDestructuredDeclarations(ast: t.File, bindings: Set<string>): void; | ||
| export declare function removeBindingsTransitivelyDependingOn(bindings: Set<string>, dependencyGraph: Map<string, Set<string>>, roots: Iterable<string>): void; | ||
| export declare function removeModuleLevelBindings(ast: t.File, namesToRemove: Set<string>): void; | ||
| export declare function retainModuleLevelDeclarations(ast: t.File, bindingsToKeep: Set<string>): void; | ||
| export declare function unwrapExportedDeclarations(ast: t.File): void; | ||
| export declare function stripUnreferencedTopLevelExpressionStatements(ast: t.File): void; |
| import * as t from "@babel/types"; | ||
| //#region src/compiler-helpers.ts | ||
| function getModuleExportName(node) { | ||
| return t.isIdentifier(node) ? node.name : node.value; | ||
| } | ||
| function addVariableDeclarationModuleInfo(declaration, bindings, exportMap) { | ||
| for (const declarator of declaration.declarations) for (const name of collectIdentifiersFromPattern(declarator.id)) { | ||
| bindings.set(name, { | ||
| type: "var", | ||
| init: declarator.init ?? null | ||
| }); | ||
| exportMap?.set(name, name); | ||
| } | ||
| } | ||
| function addDeclarationModuleInfo(declaration, bindings, exportMap) { | ||
| if (t.isVariableDeclaration(declaration)) { | ||
| addVariableDeclarationModuleInfo(declaration, bindings, exportMap); | ||
| return; | ||
| } | ||
| if ((t.isFunctionDeclaration(declaration) || t.isClassDeclaration(declaration)) && declaration.id) { | ||
| bindings.set(declaration.id.name, { | ||
| type: "var", | ||
| init: null | ||
| }); | ||
| exportMap?.set(declaration.id.name, declaration.id.name); | ||
| } | ||
| } | ||
| function hasIdentifierBinding(scopes, name) { | ||
| for (let i = scopes.length - 1; i >= 0; i--) if (scopes[i].bindings.has(name)) return true; | ||
| return false; | ||
| } | ||
| function currentIdentifierScope(scopes) { | ||
| return scopes[scopes.length - 1]; | ||
| } | ||
| function nearestFunctionIdentifierScope(scopes) { | ||
| for (let i = scopes.length - 1; i >= 0; i--) { | ||
| const scope = scopes[i]; | ||
| if (scope.kind === "function" || scope.kind === "program") return scope; | ||
| } | ||
| return currentIdentifierScope(scopes); | ||
| } | ||
| function addIdentifierPatternBindings(pattern, scope) { | ||
| for (const name of collectIdentifiersFromPattern(pattern)) scope.bindings.add(name); | ||
| } | ||
| function addIdentifierDeclarationBindings(declaration, scopes) { | ||
| if (t.isVariableDeclaration(declaration)) { | ||
| const scope = declaration.kind === "var" ? nearestFunctionIdentifierScope(scopes) : currentIdentifierScope(scopes); | ||
| for (const declarator of declaration.declarations) addIdentifierPatternBindings(declarator.id, scope); | ||
| return; | ||
| } | ||
| if ((t.isFunctionDeclaration(declaration) || t.isClassDeclaration(declaration) || t.isTSTypeAliasDeclaration(declaration) || t.isTSInterfaceDeclaration(declaration) || t.isTSEnumDeclaration(declaration)) && declaration.id) currentIdentifierScope(scopes).bindings.add(declaration.id.name); | ||
| } | ||
| function addIdentifierImportBindings(node, scope) { | ||
| for (const specifier of node.specifiers) scope.bindings.add(specifier.local.name); | ||
| } | ||
| function createNestedIdentifierScope(kind, scopes) { | ||
| return [...scopes, { | ||
| kind, | ||
| bindings: /* @__PURE__ */ new Set() | ||
| }]; | ||
| } | ||
| function addIdentifierBlockBindings(body, scopes) { | ||
| for (const statement of body) if (t.isImportDeclaration(statement)) addIdentifierImportBindings(statement, currentIdentifierScope(scopes)); | ||
| else if (t.isExportNamedDeclaration(statement) && statement.declaration) addIdentifierDeclarationBindings(statement.declaration, scopes); | ||
| else addIdentifierDeclarationBindings(statement, scopes); | ||
| } | ||
| function walkIdentifierChildren(current, parent, scopes, ids) { | ||
| for (const key of t.VISITOR_KEYS[current.type] ?? []) { | ||
| const child = current[key]; | ||
| if (Array.isArray(child)) { | ||
| for (const item of child) if (item && typeof item.type === "string") walkIdentifierNode(item, current, parent, key, scopes, ids); | ||
| } else if (child && typeof child.type === "string") walkIdentifierNode(child, current, parent, key, scopes, ids); | ||
| } | ||
| } | ||
| function walkIdentifierNode(current, parent, grandparent, parentKey, scopes, ids) { | ||
| if (!current) return; | ||
| if (t.isIdentifier(current)) { | ||
| if ((!parent || t.isReferenced(current, parent, grandparent)) && !hasIdentifierBinding(scopes, current.name)) ids.add(current.name); | ||
| return; | ||
| } | ||
| if (t.isJSXIdentifier(current)) { | ||
| if (parent && t.isJSXAttribute(parent) && parentKey === "name") return; | ||
| if (parent && t.isJSXMemberExpression(parent) && parentKey === "property") return; | ||
| const first = current.name[0]; | ||
| if (first && first === first.toLowerCase()) return; | ||
| if (!hasIdentifierBinding(scopes, current.name)) ids.add(current.name); | ||
| return; | ||
| } | ||
| if (t.isProgram(current)) { | ||
| const nestedScopes = createNestedIdentifierScope("program", scopes); | ||
| addIdentifierBlockBindings(current.body, nestedScopes); | ||
| for (const child of current.body) walkIdentifierNode(child, current, parent, "body", nestedScopes, ids); | ||
| return; | ||
| } | ||
| if (t.isBlockStatement(current)) { | ||
| const nestedScopes = createNestedIdentifierScope("block", scopes); | ||
| addIdentifierBlockBindings(current.body, nestedScopes); | ||
| for (const child of current.body) walkIdentifierNode(child, current, parent, "body", nestedScopes, ids); | ||
| return; | ||
| } | ||
| if (t.isFunctionDeclaration(current) || t.isFunctionExpression(current) || t.isArrowFunctionExpression(current) || t.isObjectMethod(current) || t.isClassMethod(current) || t.isClassPrivateMethod(current)) { | ||
| if (t.isFunctionDeclaration(current) && current.id) currentIdentifierScope(scopes).bindings.add(current.id.name); | ||
| const nestedScopes = createNestedIdentifierScope("function", scopes); | ||
| if ((t.isFunctionDeclaration(current) || t.isFunctionExpression(current)) && current.id) currentIdentifierScope(nestedScopes).bindings.add(current.id.name); | ||
| for (const param of current.params) addIdentifierPatternBindings(param, currentIdentifierScope(nestedScopes)); | ||
| walkIdentifierChildren(current, parent, nestedScopes, ids); | ||
| return; | ||
| } | ||
| if (t.isCatchClause(current)) { | ||
| const nestedScopes = createNestedIdentifierScope("block", scopes); | ||
| addIdentifierPatternBindings(current.param, currentIdentifierScope(nestedScopes)); | ||
| walkIdentifierNode(current.param, current, parent, "param", nestedScopes, ids); | ||
| walkIdentifierNode(current.body, current, parent, "body", nestedScopes, ids); | ||
| return; | ||
| } | ||
| if (t.isImportDeclaration(current)) { | ||
| addIdentifierImportBindings(current, currentIdentifierScope(scopes)); | ||
| return; | ||
| } | ||
| if (t.isClassDeclaration(current) || t.isClassExpression(current)) { | ||
| if (t.isClassDeclaration(current) && current.id) currentIdentifierScope(scopes).bindings.add(current.id.name); | ||
| const nestedScopes = current.id ? createNestedIdentifierScope("block", scopes) : scopes; | ||
| if (current.id) currentIdentifierScope(nestedScopes).bindings.add(current.id.name); | ||
| walkIdentifierChildren(current, parent, nestedScopes, ids); | ||
| return; | ||
| } | ||
| if (t.isVariableDeclaration(current)) addIdentifierDeclarationBindings(current, scopes); | ||
| else if (t.isVariableDeclarator(current)) { | ||
| const scope = parent && t.isVariableDeclaration(parent) && parent.kind === "var" ? nearestFunctionIdentifierScope(scopes) : currentIdentifierScope(scopes); | ||
| addIdentifierPatternBindings(current.id, scope); | ||
| } else if (t.isTSTypeAliasDeclaration(current) || t.isTSInterfaceDeclaration(current) || t.isTSEnumDeclaration(current)) currentIdentifierScope(scopes).bindings.add(current.id.name); | ||
| walkIdentifierChildren(current, parent, scopes, ids); | ||
| } | ||
| /** | ||
| * Recursively walk an AST node and collect referenced identifier-like names. | ||
| * This avoids Babel path/scope allocation for module-level dependency scans. | ||
| */ | ||
| function collectIdentifiersFromNode(node) { | ||
| const ids = /* @__PURE__ */ new Set(); | ||
| walkIdentifierNode(node, void 0, void 0, void 0, [{ | ||
| kind: "program", | ||
| bindings: /* @__PURE__ */ new Set() | ||
| }], ids); | ||
| return ids; | ||
| } | ||
| function collectIdentifiersFromPattern(node) { | ||
| if (!node) return []; | ||
| if (t.isIdentifier(node)) return [node.name]; | ||
| if (t.isAssignmentPattern(node)) return collectIdentifiersFromPattern(node.left); | ||
| if (t.isRestElement(node)) return collectIdentifiersFromPattern(node.argument); | ||
| if (t.isObjectPattern(node)) return node.properties.flatMap((prop) => { | ||
| if (t.isObjectProperty(prop)) return collectIdentifiersFromPattern(prop.value); | ||
| if (t.isRestElement(prop)) return collectIdentifiersFromPattern(prop.argument); | ||
| return []; | ||
| }); | ||
| if (t.isArrayPattern(node)) return node.elements.flatMap((element) => collectIdentifiersFromPattern(element)); | ||
| return []; | ||
| } | ||
| function collectLocalBindingsFromStatement(node, bindings) { | ||
| const declaration = t.isExportNamedDeclaration(node) && node.declaration ? node.declaration : t.isExportDefaultDeclaration(node) ? node.declaration : node; | ||
| if (t.isVariableDeclaration(declaration)) for (const declarator of declaration.declarations) for (const name of collectIdentifiersFromPattern(declarator.id)) bindings.add(name); | ||
| else if (t.isFunctionDeclaration(declaration) && declaration.id) bindings.add(declaration.id.name); | ||
| else if (t.isClassDeclaration(declaration) && declaration.id) bindings.add(declaration.id.name); | ||
| } | ||
| function extractModuleInfoFromAst(ast) { | ||
| const bindings = /* @__PURE__ */ new Map(); | ||
| const exportMap = /* @__PURE__ */ new Map(); | ||
| const reExportAllSources = []; | ||
| for (const node of ast.program.body) { | ||
| if (t.isImportDeclaration(node)) { | ||
| const source = node.source.value; | ||
| for (const specifier of node.specifiers) if (t.isImportSpecifier(specifier)) bindings.set(specifier.local.name, { | ||
| type: "import", | ||
| source, | ||
| importedName: getModuleExportName(specifier.imported) | ||
| }); | ||
| else if (t.isImportDefaultSpecifier(specifier)) bindings.set(specifier.local.name, { | ||
| type: "import", | ||
| source, | ||
| importedName: "default" | ||
| }); | ||
| else if (t.isImportNamespaceSpecifier(specifier)) bindings.set(specifier.local.name, { | ||
| type: "import", | ||
| source, | ||
| importedName: "*" | ||
| }); | ||
| continue; | ||
| } | ||
| if (t.isVariableDeclaration(node)) { | ||
| addVariableDeclarationModuleInfo(node, bindings); | ||
| continue; | ||
| } | ||
| if (t.isFunctionDeclaration(node) || t.isClassDeclaration(node)) { | ||
| addDeclarationModuleInfo(node, bindings); | ||
| continue; | ||
| } | ||
| if (t.isExportNamedDeclaration(node)) { | ||
| if (node.declaration) addDeclarationModuleInfo(node.declaration, bindings, exportMap); | ||
| for (const specifier of node.specifiers) if (t.isExportNamespaceSpecifier(specifier)) { | ||
| const exported = getModuleExportName(specifier.exported); | ||
| exportMap.set(exported, exported); | ||
| if (node.source) bindings.set(exported, { | ||
| type: "import", | ||
| source: node.source.value, | ||
| importedName: "*" | ||
| }); | ||
| } else if (t.isExportSpecifier(specifier)) { | ||
| const local = getModuleExportName(specifier.local); | ||
| const exported = getModuleExportName(specifier.exported); | ||
| exportMap.set(exported, local); | ||
| if (node.source) bindings.set(local, { | ||
| type: "import", | ||
| source: node.source.value, | ||
| importedName: local | ||
| }); | ||
| } | ||
| continue; | ||
| } | ||
| if (t.isExportDefaultDeclaration(node)) { | ||
| const declaration = node.declaration; | ||
| if (t.isIdentifier(declaration)) exportMap.set("default", declaration.name); | ||
| else if ((t.isFunctionDeclaration(declaration) || t.isClassDeclaration(declaration)) && declaration.id) { | ||
| bindings.set(declaration.id.name, { | ||
| type: "var", | ||
| init: null | ||
| }); | ||
| exportMap.set("default", declaration.id.name); | ||
| } else { | ||
| const synth = "__default_export__"; | ||
| bindings.set(synth, { | ||
| type: "var", | ||
| init: t.isExpression(declaration) ? declaration : null | ||
| }); | ||
| exportMap.set("default", synth); | ||
| } | ||
| continue; | ||
| } | ||
| if (t.isExportAllDeclaration(node)) reExportAllSources.push(node.source.value); | ||
| } | ||
| return { | ||
| bindings, | ||
| exports: exportMap, | ||
| reExportAllSources | ||
| }; | ||
| } | ||
| function buildDeclarationMap(ast) { | ||
| const map = /* @__PURE__ */ new Map(); | ||
| for (const statement of ast.program.body) { | ||
| const declaration = t.isExportNamedDeclaration(statement) && statement.declaration ? statement.declaration : t.isExportDefaultDeclaration(statement) ? statement.declaration : statement; | ||
| if (t.isVariableDeclaration(declaration)) for (const declarator of declaration.declarations) for (const name of collectIdentifiersFromPattern(declarator.id)) map.set(name, declarator); | ||
| else if (t.isFunctionDeclaration(declaration) && declaration.id) map.set(declaration.id.name, declaration); | ||
| else if (t.isClassDeclaration(declaration) && declaration.id) map.set(declaration.id.name, declaration); | ||
| } | ||
| return map; | ||
| } | ||
| function buildDependencyGraph(declarationMap, localBindings) { | ||
| const graph = /* @__PURE__ */ new Map(); | ||
| for (const [name, declarationNode] of declarationMap) { | ||
| if (!localBindings.has(name)) continue; | ||
| const dependencies = /* @__PURE__ */ new Set(); | ||
| for (const id of collectIdentifiersFromNode(declarationNode)) if (id !== name && localBindings.has(id)) dependencies.add(id); | ||
| graph.set(name, dependencies); | ||
| } | ||
| return graph; | ||
| } | ||
| function collectModuleLevelRefsFromNode(node, localModuleLevelBindings) { | ||
| const refs = /* @__PURE__ */ new Set(); | ||
| for (const name of collectIdentifiersFromNode(node)) if (localModuleLevelBindings.has(name)) refs.add(name); | ||
| return refs; | ||
| } | ||
| function expandTransitively(bindings, dependencyGraph) { | ||
| const queue = [...bindings]; | ||
| const visited = /* @__PURE__ */ new Set(); | ||
| while (queue.length > 0) { | ||
| const name = queue.pop(); | ||
| if (visited.has(name)) continue; | ||
| visited.add(name); | ||
| const dependencies = dependencyGraph.get(name); | ||
| if (!dependencies) continue; | ||
| for (const dependency of dependencies) if (!bindings.has(dependency)) { | ||
| bindings.add(dependency); | ||
| queue.push(dependency); | ||
| } | ||
| } | ||
| } | ||
| function expandSharedDestructuredDeclarators(ast, refsByGroup, sharedBindings) { | ||
| for (const statement of ast.program.body) { | ||
| const declaration = t.isExportNamedDeclaration(statement) && statement.declaration ? statement.declaration : statement; | ||
| if (!t.isVariableDeclaration(declaration)) continue; | ||
| for (const declarator of declaration.declarations) { | ||
| if (!t.isObjectPattern(declarator.id) && !t.isArrayPattern(declarator.id)) continue; | ||
| const names = collectIdentifiersFromPattern(declarator.id); | ||
| const usedGroups = /* @__PURE__ */ new Set(); | ||
| for (const name of names) { | ||
| const groups = refsByGroup.get(name); | ||
| if (!groups) continue; | ||
| for (const group of groups) usedGroups.add(group); | ||
| } | ||
| if (usedGroups.size >= 2) for (const name of names) sharedBindings.add(name); | ||
| } | ||
| } | ||
| } | ||
| function expandDestructuredDeclarations(ast, bindings) { | ||
| for (const statement of ast.program.body) { | ||
| const declaration = t.isExportNamedDeclaration(statement) && statement.declaration ? statement.declaration : statement; | ||
| if (!t.isVariableDeclaration(declaration)) continue; | ||
| for (const declarator of declaration.declarations) { | ||
| if (!t.isObjectPattern(declarator.id) && !t.isArrayPattern(declarator.id)) continue; | ||
| const names = collectIdentifiersFromPattern(declarator.id); | ||
| if (names.some((name) => bindings.has(name))) for (const name of names) bindings.add(name); | ||
| } | ||
| } | ||
| } | ||
| function removeBindingsTransitivelyDependingOn(bindings, dependencyGraph, roots) { | ||
| const reverseGraph = /* @__PURE__ */ new Map(); | ||
| for (const [name, dependencies] of dependencyGraph) for (const dependency of dependencies) { | ||
| let parents = reverseGraph.get(dependency); | ||
| if (!parents) { | ||
| parents = /* @__PURE__ */ new Set(); | ||
| reverseGraph.set(dependency, parents); | ||
| } | ||
| parents.add(name); | ||
| } | ||
| const visited = /* @__PURE__ */ new Set(); | ||
| const queue = [...roots]; | ||
| while (queue.length > 0) { | ||
| const current = queue.pop(); | ||
| if (visited.has(current)) continue; | ||
| visited.add(current); | ||
| const parents = reverseGraph.get(current); | ||
| if (!parents) continue; | ||
| for (const parent of parents) if (!visited.has(parent)) queue.push(parent); | ||
| } | ||
| for (const name of [...bindings]) if (visited.has(name)) bindings.delete(name); | ||
| } | ||
| function removeModuleLevelBindings(ast, namesToRemove) { | ||
| ast.program.body = ast.program.body.filter((statement) => { | ||
| const declaration = t.isExportNamedDeclaration(statement) && statement.declaration ? statement.declaration : statement; | ||
| if (t.isVariableDeclaration(declaration)) { | ||
| declaration.declarations = declaration.declarations.filter((declarator) => !collectIdentifiersFromPattern(declarator.id).some((name) => namesToRemove.has(name))); | ||
| return declaration.declarations.length > 0; | ||
| } | ||
| if (t.isFunctionDeclaration(declaration) && declaration.id) return !namesToRemove.has(declaration.id.name); | ||
| if (t.isClassDeclaration(declaration) && declaration.id) return !namesToRemove.has(declaration.id.name); | ||
| if (t.isExportDefaultDeclaration(statement)) { | ||
| const defaultDeclaration = statement.declaration; | ||
| if ((t.isFunctionDeclaration(defaultDeclaration) || t.isClassDeclaration(defaultDeclaration)) && defaultDeclaration.id) return !namesToRemove.has(defaultDeclaration.id.name); | ||
| } | ||
| return true; | ||
| }); | ||
| } | ||
| function retainModuleLevelDeclarations(ast, bindingsToKeep) { | ||
| ast.program.body = ast.program.body.filter((statement) => { | ||
| if (t.isImportDeclaration(statement)) return true; | ||
| const declaration = t.isExportNamedDeclaration(statement) && statement.declaration ? statement.declaration : statement; | ||
| if (t.isVariableDeclaration(declaration)) { | ||
| declaration.declarations = declaration.declarations.filter((declarator) => collectIdentifiersFromPattern(declarator.id).some((name) => bindingsToKeep.has(name))); | ||
| return declaration.declarations.length > 0; | ||
| } | ||
| if (t.isFunctionDeclaration(declaration) && declaration.id) return bindingsToKeep.has(declaration.id.name); | ||
| if (t.isClassDeclaration(declaration) && declaration.id) return bindingsToKeep.has(declaration.id.name); | ||
| return false; | ||
| }); | ||
| } | ||
| function unwrapExportedDeclarations(ast) { | ||
| const body = []; | ||
| for (const statement of ast.program.body) { | ||
| if (t.isExportNamedDeclaration(statement)) { | ||
| if (statement.declaration) body.push(statement.declaration); | ||
| continue; | ||
| } | ||
| if (t.isExportDefaultDeclaration(statement)) { | ||
| const declaration = statement.declaration; | ||
| if ((t.isFunctionDeclaration(declaration) || t.isClassDeclaration(declaration)) && declaration.id) body.push(declaration); | ||
| continue; | ||
| } | ||
| if (t.isExportAllDeclaration(statement)) continue; | ||
| body.push(statement); | ||
| } | ||
| ast.program.body = body; | ||
| } | ||
| function stripUnreferencedTopLevelExpressionStatements(ast) { | ||
| const locallyBound = /* @__PURE__ */ new Set(); | ||
| for (const statement of ast.program.body) collectLocalBindingsFromStatement(statement, locallyBound); | ||
| ast.program.body = ast.program.body.filter((statement) => { | ||
| if (!t.isExpressionStatement(statement)) return true; | ||
| for (const name of collectIdentifiersFromNode(statement)) if (locallyBound.has(name)) return true; | ||
| return false; | ||
| }); | ||
| } | ||
| //#endregion | ||
| export { buildDeclarationMap, buildDependencyGraph, collectIdentifiersFromNode, collectIdentifiersFromPattern, collectLocalBindingsFromStatement, collectModuleLevelRefsFromNode, expandDestructuredDeclarations, expandSharedDestructuredDeclarators, expandTransitively, extractModuleInfoFromAst, removeBindingsTransitivelyDependingOn, removeModuleLevelBindings, retainModuleLevelDeclarations, stripUnreferencedTopLevelExpressionStatements, unwrapExportedDeclarations }; | ||
| //# sourceMappingURL=compiler-helpers.js.map |
| {"version":3,"file":"compiler-helpers.js","names":[],"sources":["../../src/compiler-helpers.ts"],"sourcesContent":["import * as t from '@babel/types'\n\ntype IdentifierScopeFrame = {\n kind: 'program' | 'function' | 'block'\n bindings: Set<string>\n}\ntype IdentifierScopeStack = Array<IdentifierScopeFrame>\n\nexport type ModuleInfoBinding =\n | {\n type: 'import'\n source: string\n importedName: string\n }\n | {\n type: 'var'\n init: t.Expression | null\n }\n\nexport interface ExtractedModuleInfo {\n bindings: Map<string, ModuleInfoBinding>\n exports: Map<string, string>\n reExportAllSources: Array<string>\n}\n\nfunction getModuleExportName(node: t.Identifier | t.StringLiteral) {\n return t.isIdentifier(node) ? node.name : node.value\n}\n\nfunction addVariableDeclarationModuleInfo(\n declaration: t.VariableDeclaration,\n bindings: Map<string, ModuleInfoBinding>,\n exportMap?: Map<string, string>,\n) {\n for (const declarator of declaration.declarations) {\n for (const name of collectIdentifiersFromPattern(declarator.id)) {\n bindings.set(name, {\n type: 'var',\n init: declarator.init ?? null,\n })\n exportMap?.set(name, name)\n }\n }\n}\n\nfunction addDeclarationModuleInfo(\n declaration: t.Declaration,\n bindings: Map<string, ModuleInfoBinding>,\n exportMap?: Map<string, string>,\n) {\n if (t.isVariableDeclaration(declaration)) {\n addVariableDeclarationModuleInfo(declaration, bindings, exportMap)\n return\n }\n\n if (\n (t.isFunctionDeclaration(declaration) ||\n t.isClassDeclaration(declaration)) &&\n declaration.id\n ) {\n bindings.set(declaration.id.name, {\n type: 'var',\n init: null,\n })\n exportMap?.set(declaration.id.name, declaration.id.name)\n }\n}\n\nfunction hasIdentifierBinding(scopes: IdentifierScopeStack, name: string) {\n for (let i = scopes.length - 1; i >= 0; i--) {\n if (scopes[i]!.bindings.has(name)) {\n return true\n }\n }\n return false\n}\n\nfunction currentIdentifierScope(scopes: IdentifierScopeStack) {\n return scopes[scopes.length - 1]!\n}\n\nfunction nearestFunctionIdentifierScope(scopes: IdentifierScopeStack) {\n for (let i = scopes.length - 1; i >= 0; i--) {\n const scope = scopes[i]!\n if (scope.kind === 'function' || scope.kind === 'program') {\n return scope\n }\n }\n return currentIdentifierScope(scopes)\n}\n\nfunction addIdentifierPatternBindings(\n pattern: t.LVal | t.Node | null | undefined,\n scope: IdentifierScopeFrame,\n) {\n for (const name of collectIdentifiersFromPattern(pattern)) {\n scope.bindings.add(name)\n }\n}\n\nfunction addIdentifierDeclarationBindings(\n declaration: t.Node,\n scopes: IdentifierScopeStack,\n) {\n if (t.isVariableDeclaration(declaration)) {\n const scope =\n declaration.kind === 'var'\n ? nearestFunctionIdentifierScope(scopes)\n : currentIdentifierScope(scopes)\n for (const declarator of declaration.declarations) {\n addIdentifierPatternBindings(declarator.id, scope)\n }\n return\n }\n\n if (\n (t.isFunctionDeclaration(declaration) ||\n t.isClassDeclaration(declaration) ||\n t.isTSTypeAliasDeclaration(declaration) ||\n t.isTSInterfaceDeclaration(declaration) ||\n t.isTSEnumDeclaration(declaration)) &&\n declaration.id\n ) {\n currentIdentifierScope(scopes).bindings.add(declaration.id.name)\n }\n}\n\nfunction addIdentifierImportBindings(\n node: t.ImportDeclaration,\n scope: IdentifierScopeFrame,\n) {\n for (const specifier of node.specifiers) {\n scope.bindings.add(specifier.local.name)\n }\n}\n\nfunction createNestedIdentifierScope(\n kind: IdentifierScopeFrame['kind'],\n scopes: IdentifierScopeStack,\n): IdentifierScopeStack {\n return [...scopes, { kind, bindings: new Set() }]\n}\n\nfunction addIdentifierBlockBindings(\n body: Array<t.Node>,\n scopes: IdentifierScopeStack,\n) {\n for (const statement of body) {\n if (t.isImportDeclaration(statement)) {\n addIdentifierImportBindings(statement, currentIdentifierScope(scopes))\n } else if (t.isExportNamedDeclaration(statement) && statement.declaration) {\n addIdentifierDeclarationBindings(statement.declaration, scopes)\n } else {\n addIdentifierDeclarationBindings(statement, scopes)\n }\n }\n}\n\nfunction walkIdentifierChildren(\n current: t.Node,\n parent: t.Node | undefined,\n scopes: IdentifierScopeStack,\n ids: Set<string>,\n) {\n for (const key of t.VISITOR_KEYS[current.type] ?? []) {\n const child = (current as any)[key]\n if (Array.isArray(child)) {\n for (const item of child) {\n if (item && typeof item.type === 'string') {\n walkIdentifierNode(item, current, parent, key, scopes, ids)\n }\n }\n } else if (child && typeof child.type === 'string') {\n walkIdentifierNode(child, current, parent, key, scopes, ids)\n }\n }\n}\n\nfunction walkIdentifierNode(\n current: t.Node | null | undefined,\n parent: t.Node | undefined,\n grandparent: t.Node | undefined,\n parentKey: string | undefined,\n scopes: IdentifierScopeStack,\n ids: Set<string>,\n) {\n if (!current) return\n\n if (t.isIdentifier(current)) {\n if (\n (!parent || t.isReferenced(current, parent, grandparent)) &&\n !hasIdentifierBinding(scopes, current.name)\n ) {\n ids.add(current.name)\n }\n return\n }\n\n if (t.isJSXIdentifier(current)) {\n if (parent && t.isJSXAttribute(parent) && parentKey === 'name') {\n return\n }\n\n if (parent && t.isJSXMemberExpression(parent) && parentKey === 'property') {\n return\n }\n\n const first = current.name[0]\n if (first && first === first.toLowerCase()) {\n return\n }\n\n if (!hasIdentifierBinding(scopes, current.name)) {\n ids.add(current.name)\n }\n return\n }\n\n if (t.isProgram(current)) {\n const nestedScopes = createNestedIdentifierScope('program', scopes)\n addIdentifierBlockBindings(current.body, nestedScopes)\n for (const child of current.body) {\n walkIdentifierNode(child, current, parent, 'body', nestedScopes, ids)\n }\n return\n }\n\n if (t.isBlockStatement(current)) {\n const nestedScopes = createNestedIdentifierScope('block', scopes)\n addIdentifierBlockBindings(current.body, nestedScopes)\n for (const child of current.body) {\n walkIdentifierNode(child, current, parent, 'body', nestedScopes, ids)\n }\n return\n }\n\n if (\n t.isFunctionDeclaration(current) ||\n t.isFunctionExpression(current) ||\n t.isArrowFunctionExpression(current) ||\n t.isObjectMethod(current) ||\n t.isClassMethod(current) ||\n t.isClassPrivateMethod(current)\n ) {\n if (t.isFunctionDeclaration(current) && current.id) {\n currentIdentifierScope(scopes).bindings.add(current.id.name)\n }\n\n const nestedScopes = createNestedIdentifierScope('function', scopes)\n if (\n (t.isFunctionDeclaration(current) || t.isFunctionExpression(current)) &&\n current.id\n ) {\n currentIdentifierScope(nestedScopes).bindings.add(current.id.name)\n }\n for (const param of current.params) {\n addIdentifierPatternBindings(param, currentIdentifierScope(nestedScopes))\n }\n\n walkIdentifierChildren(current, parent, nestedScopes, ids)\n return\n }\n\n if (t.isCatchClause(current)) {\n const nestedScopes = createNestedIdentifierScope('block', scopes)\n addIdentifierPatternBindings(\n current.param,\n currentIdentifierScope(nestedScopes),\n )\n walkIdentifierNode(\n current.param,\n current,\n parent,\n 'param',\n nestedScopes,\n ids,\n )\n walkIdentifierNode(current.body, current, parent, 'body', nestedScopes, ids)\n return\n }\n\n if (t.isImportDeclaration(current)) {\n addIdentifierImportBindings(current, currentIdentifierScope(scopes))\n return\n }\n\n if (t.isClassDeclaration(current) || t.isClassExpression(current)) {\n if (t.isClassDeclaration(current) && current.id) {\n currentIdentifierScope(scopes).bindings.add(current.id.name)\n }\n\n const nestedScopes = current.id\n ? createNestedIdentifierScope('block', scopes)\n : scopes\n if (current.id) {\n currentIdentifierScope(nestedScopes).bindings.add(current.id.name)\n }\n\n walkIdentifierChildren(current, parent, nestedScopes, ids)\n return\n }\n\n if (t.isVariableDeclaration(current)) {\n addIdentifierDeclarationBindings(current, scopes)\n } else if (t.isVariableDeclarator(current)) {\n const scope =\n parent && t.isVariableDeclaration(parent) && parent.kind === 'var'\n ? nearestFunctionIdentifierScope(scopes)\n : currentIdentifierScope(scopes)\n addIdentifierPatternBindings(current.id, scope)\n } else if (\n t.isTSTypeAliasDeclaration(current) ||\n t.isTSInterfaceDeclaration(current) ||\n t.isTSEnumDeclaration(current)\n ) {\n currentIdentifierScope(scopes).bindings.add(current.id.name)\n }\n\n walkIdentifierChildren(current, parent, scopes, ids)\n}\n\n/**\n * Recursively walk an AST node and collect referenced identifier-like names.\n * This avoids Babel path/scope allocation for module-level dependency scans.\n */\nexport function collectIdentifiersFromNode(node: t.Node): Set<string> {\n const ids = new Set<string>()\n walkIdentifierNode(\n node,\n undefined,\n undefined,\n undefined,\n [{ kind: 'program', bindings: new Set() }],\n ids,\n )\n return ids\n}\n\nexport function collectIdentifiersFromPattern(\n node: t.LVal | t.Node | null | undefined,\n): Array<string> {\n if (!node) {\n return []\n }\n\n if (t.isIdentifier(node)) {\n return [node.name]\n }\n\n if (t.isAssignmentPattern(node)) {\n return collectIdentifiersFromPattern(node.left)\n }\n\n if (t.isRestElement(node)) {\n return collectIdentifiersFromPattern(node.argument)\n }\n\n if (t.isObjectPattern(node)) {\n return node.properties.flatMap((prop) => {\n if (t.isObjectProperty(prop)) {\n return collectIdentifiersFromPattern(prop.value as t.LVal)\n }\n if (t.isRestElement(prop)) {\n return collectIdentifiersFromPattern(prop.argument)\n }\n return []\n })\n }\n\n if (t.isArrayPattern(node)) {\n return node.elements.flatMap((element) =>\n collectIdentifiersFromPattern(element),\n )\n }\n\n return []\n}\n\nexport function collectLocalBindingsFromStatement(\n node: t.Statement | t.ModuleDeclaration,\n bindings: Set<string>,\n) {\n const declaration =\n t.isExportNamedDeclaration(node) && node.declaration\n ? node.declaration\n : t.isExportDefaultDeclaration(node)\n ? node.declaration\n : node\n\n if (t.isVariableDeclaration(declaration)) {\n for (const declarator of declaration.declarations) {\n for (const name of collectIdentifiersFromPattern(declarator.id)) {\n bindings.add(name)\n }\n }\n } else if (t.isFunctionDeclaration(declaration) && declaration.id) {\n bindings.add(declaration.id.name)\n } else if (t.isClassDeclaration(declaration) && declaration.id) {\n bindings.add(declaration.id.name)\n }\n}\n\nexport function extractModuleInfoFromAst(ast: t.File): ExtractedModuleInfo {\n const bindings = new Map<string, ModuleInfoBinding>()\n const exportMap = new Map<string, string>()\n const reExportAllSources: Array<string> = []\n\n for (const node of ast.program.body) {\n if (t.isImportDeclaration(node)) {\n const source = node.source.value\n for (const specifier of node.specifiers) {\n if (t.isImportSpecifier(specifier)) {\n bindings.set(specifier.local.name, {\n type: 'import',\n source,\n importedName: getModuleExportName(specifier.imported),\n })\n } else if (t.isImportDefaultSpecifier(specifier)) {\n bindings.set(specifier.local.name, {\n type: 'import',\n source,\n importedName: 'default',\n })\n } else if (t.isImportNamespaceSpecifier(specifier)) {\n bindings.set(specifier.local.name, {\n type: 'import',\n source,\n importedName: '*',\n })\n }\n }\n continue\n }\n\n if (t.isVariableDeclaration(node)) {\n addVariableDeclarationModuleInfo(node, bindings)\n continue\n }\n\n if (t.isFunctionDeclaration(node) || t.isClassDeclaration(node)) {\n addDeclarationModuleInfo(node, bindings)\n continue\n }\n\n if (t.isExportNamedDeclaration(node)) {\n if (node.declaration) {\n addDeclarationModuleInfo(node.declaration, bindings, exportMap)\n }\n\n for (const specifier of node.specifiers) {\n if (t.isExportNamespaceSpecifier(specifier)) {\n const exported = getModuleExportName(specifier.exported)\n exportMap.set(exported, exported)\n if (node.source) {\n bindings.set(exported, {\n type: 'import',\n source: node.source.value,\n importedName: '*',\n })\n }\n } else if (t.isExportSpecifier(specifier)) {\n const local = getModuleExportName(specifier.local)\n const exported = getModuleExportName(specifier.exported)\n exportMap.set(exported, local)\n\n if (node.source) {\n bindings.set(local, {\n type: 'import',\n source: node.source.value,\n importedName: local,\n })\n }\n }\n }\n continue\n }\n\n if (t.isExportDefaultDeclaration(node)) {\n const declaration = node.declaration\n if (t.isIdentifier(declaration)) {\n exportMap.set('default', declaration.name)\n } else if (\n (t.isFunctionDeclaration(declaration) ||\n t.isClassDeclaration(declaration)) &&\n declaration.id\n ) {\n bindings.set(declaration.id.name, {\n type: 'var',\n init: null,\n })\n exportMap.set('default', declaration.id.name)\n } else {\n const synth = '__default_export__'\n bindings.set(synth, {\n type: 'var',\n init: t.isExpression(declaration) ? declaration : null,\n })\n exportMap.set('default', synth)\n }\n continue\n }\n\n if (t.isExportAllDeclaration(node)) {\n reExportAllSources.push(node.source.value)\n }\n }\n\n return {\n bindings,\n exports: exportMap,\n reExportAllSources,\n }\n}\n\nexport function buildDeclarationMap(ast: t.File): Map<string, t.Node> {\n const map = new Map<string, t.Node>()\n\n for (const statement of ast.program.body) {\n const declaration =\n t.isExportNamedDeclaration(statement) && statement.declaration\n ? statement.declaration\n : t.isExportDefaultDeclaration(statement)\n ? statement.declaration\n : statement\n\n if (t.isVariableDeclaration(declaration)) {\n for (const declarator of declaration.declarations) {\n for (const name of collectIdentifiersFromPattern(declarator.id)) {\n map.set(name, declarator)\n }\n }\n } else if (t.isFunctionDeclaration(declaration) && declaration.id) {\n map.set(declaration.id.name, declaration)\n } else if (t.isClassDeclaration(declaration) && declaration.id) {\n map.set(declaration.id.name, declaration)\n }\n }\n\n return map\n}\n\nexport function buildDependencyGraph(\n declarationMap: Map<string, t.Node>,\n localBindings: Set<string>,\n): Map<string, Set<string>> {\n const graph = new Map<string, Set<string>>()\n\n for (const [name, declarationNode] of declarationMap) {\n if (!localBindings.has(name)) continue\n\n const dependencies = new Set<string>()\n for (const id of collectIdentifiersFromNode(declarationNode)) {\n if (id !== name && localBindings.has(id)) {\n dependencies.add(id)\n }\n }\n graph.set(name, dependencies)\n }\n\n return graph\n}\n\nexport function collectModuleLevelRefsFromNode(\n node: t.Node,\n localModuleLevelBindings: Set<string>,\n): Set<string> {\n const refs = new Set<string>()\n\n for (const name of collectIdentifiersFromNode(node)) {\n if (localModuleLevelBindings.has(name)) {\n refs.add(name)\n }\n }\n\n return refs\n}\n\nexport function expandTransitively(\n bindings: Set<string>,\n dependencyGraph: Map<string, Set<string>>,\n) {\n const queue = [...bindings]\n const visited = new Set<string>()\n\n while (queue.length > 0) {\n const name = queue.pop()!\n if (visited.has(name)) continue\n visited.add(name)\n\n const dependencies = dependencyGraph.get(name)\n if (!dependencies) continue\n\n for (const dependency of dependencies) {\n if (!bindings.has(dependency)) {\n bindings.add(dependency)\n queue.push(dependency)\n }\n }\n }\n}\n\nexport function expandSharedDestructuredDeclarators(\n ast: t.File,\n refsByGroup: Map<string, Set<number>>,\n sharedBindings: Set<string>,\n) {\n for (const statement of ast.program.body) {\n const declaration =\n t.isExportNamedDeclaration(statement) && statement.declaration\n ? statement.declaration\n : statement\n\n if (!t.isVariableDeclaration(declaration)) continue\n\n for (const declarator of declaration.declarations) {\n if (\n !t.isObjectPattern(declarator.id) &&\n !t.isArrayPattern(declarator.id)\n ) {\n continue\n }\n\n const names = collectIdentifiersFromPattern(declarator.id)\n const usedGroups = new Set<number>()\n\n for (const name of names) {\n const groups = refsByGroup.get(name)\n if (!groups) continue\n for (const group of groups) {\n usedGroups.add(group)\n }\n }\n\n if (usedGroups.size >= 2) {\n for (const name of names) {\n sharedBindings.add(name)\n }\n }\n }\n }\n}\n\nexport function expandDestructuredDeclarations(\n ast: t.File,\n bindings: Set<string>,\n) {\n for (const statement of ast.program.body) {\n const declaration =\n t.isExportNamedDeclaration(statement) && statement.declaration\n ? statement.declaration\n : statement\n\n if (!t.isVariableDeclaration(declaration)) continue\n\n for (const declarator of declaration.declarations) {\n if (\n !t.isObjectPattern(declarator.id) &&\n !t.isArrayPattern(declarator.id)\n ) {\n continue\n }\n\n const names = collectIdentifiersFromPattern(declarator.id)\n if (names.some((name) => bindings.has(name))) {\n for (const name of names) {\n bindings.add(name)\n }\n }\n }\n }\n}\n\nexport function removeBindingsTransitivelyDependingOn(\n bindings: Set<string>,\n dependencyGraph: Map<string, Set<string>>,\n roots: Iterable<string>,\n) {\n const reverseGraph = new Map<string, Set<string>>()\n\n for (const [name, dependencies] of dependencyGraph) {\n for (const dependency of dependencies) {\n let parents = reverseGraph.get(dependency)\n if (!parents) {\n parents = new Set()\n reverseGraph.set(dependency, parents)\n }\n parents.add(name)\n }\n }\n\n const visited = new Set<string>()\n const queue = [...roots]\n\n while (queue.length > 0) {\n const current = queue.pop()!\n if (visited.has(current)) continue\n visited.add(current)\n\n const parents = reverseGraph.get(current)\n if (!parents) continue\n\n for (const parent of parents) {\n if (!visited.has(parent)) {\n queue.push(parent)\n }\n }\n }\n\n for (const name of [...bindings]) {\n if (visited.has(name)) {\n bindings.delete(name)\n }\n }\n}\n\nexport function removeModuleLevelBindings(\n ast: t.File,\n namesToRemove: Set<string>,\n) {\n ast.program.body = ast.program.body.filter((statement) => {\n const declaration =\n t.isExportNamedDeclaration(statement) && statement.declaration\n ? statement.declaration\n : statement\n\n if (t.isVariableDeclaration(declaration)) {\n declaration.declarations = declaration.declarations.filter(\n (declarator) =>\n !collectIdentifiersFromPattern(declarator.id).some((name) =>\n namesToRemove.has(name),\n ),\n )\n return declaration.declarations.length > 0\n }\n\n if (t.isFunctionDeclaration(declaration) && declaration.id) {\n return !namesToRemove.has(declaration.id.name)\n }\n\n if (t.isClassDeclaration(declaration) && declaration.id) {\n return !namesToRemove.has(declaration.id.name)\n }\n\n if (t.isExportDefaultDeclaration(statement)) {\n const defaultDeclaration = statement.declaration\n if (\n (t.isFunctionDeclaration(defaultDeclaration) ||\n t.isClassDeclaration(defaultDeclaration)) &&\n defaultDeclaration.id\n ) {\n return !namesToRemove.has(defaultDeclaration.id.name)\n }\n }\n\n return true\n })\n}\n\nexport function retainModuleLevelDeclarations(\n ast: t.File,\n bindingsToKeep: Set<string>,\n) {\n ast.program.body = ast.program.body.filter((statement) => {\n if (t.isImportDeclaration(statement)) return true\n\n const declaration =\n t.isExportNamedDeclaration(statement) && statement.declaration\n ? statement.declaration\n : statement\n\n if (t.isVariableDeclaration(declaration)) {\n declaration.declarations = declaration.declarations.filter((declarator) =>\n collectIdentifiersFromPattern(declarator.id).some((name) =>\n bindingsToKeep.has(name),\n ),\n )\n return declaration.declarations.length > 0\n }\n\n if (t.isFunctionDeclaration(declaration) && declaration.id) {\n return bindingsToKeep.has(declaration.id.name)\n }\n\n if (t.isClassDeclaration(declaration) && declaration.id) {\n return bindingsToKeep.has(declaration.id.name)\n }\n\n return false\n })\n}\n\nexport function unwrapExportedDeclarations(ast: t.File) {\n const body: Array<t.Statement | t.ModuleDeclaration> = []\n\n for (const statement of ast.program.body) {\n if (t.isExportNamedDeclaration(statement)) {\n if (statement.declaration) {\n body.push(statement.declaration)\n }\n continue\n }\n\n if (t.isExportDefaultDeclaration(statement)) {\n const declaration = statement.declaration\n if (\n (t.isFunctionDeclaration(declaration) ||\n t.isClassDeclaration(declaration)) &&\n declaration.id\n ) {\n body.push(declaration)\n }\n continue\n }\n\n if (t.isExportAllDeclaration(statement)) {\n continue\n }\n\n body.push(statement)\n }\n\n ast.program.body = body\n}\n\nexport function stripUnreferencedTopLevelExpressionStatements(ast: t.File) {\n const locallyBound = new Set<string>()\n\n for (const statement of ast.program.body) {\n collectLocalBindingsFromStatement(statement, locallyBound)\n }\n\n ast.program.body = ast.program.body.filter((statement) => {\n if (!t.isExpressionStatement(statement)) return true\n\n for (const name of collectIdentifiersFromNode(statement)) {\n if (locallyBound.has(name)) {\n return true\n }\n }\n\n return false\n 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|
| export declare function createIdentifier(strings: Array<string>): string; | ||
| export declare function decodeIdentifier(identifier: string): Array<string>; |
| //#region src/path-ids.ts | ||
| function createIdentifier(strings) { | ||
| if (strings.length === 0) throw new Error("Cannot create an identifier from an empty array"); | ||
| let safeString = [...strings].sort().join("---").replace(/\//g, "--slash--"); | ||
| safeString = safeString.replace(/\\/g, "--backslash--"); | ||
| safeString = safeString.replace(/\?/g, "--question--"); | ||
| safeString = safeString.replace(/%/g, "--percent--"); | ||
| safeString = safeString.replace(/#/g, "--hash--"); | ||
| safeString = safeString.replace(/\+/g, "--plus--"); | ||
| safeString = safeString.replace(/=/g, "--equals--"); | ||
| safeString = safeString.replace(/&/g, "--ampersand--"); | ||
| safeString = safeString.replace(/\s/g, "_"); | ||
| return safeString; | ||
| } | ||
| function decodeIdentifier(identifier) { | ||
| if (!identifier) return []; | ||
| let combinedString = identifier.replace(/--slash--/g, "/"); | ||
| combinedString = combinedString.replace(/--backslash--/g, "\\"); | ||
| combinedString = combinedString.replace(/--question--/g, "?"); | ||
| combinedString = combinedString.replace(/--percent--/g, "%"); | ||
| combinedString = combinedString.replace(/--hash--/g, "#"); | ||
| combinedString = combinedString.replace(/--plus--/g, "+"); | ||
| combinedString = combinedString.replace(/--equals--/g, "="); | ||
| combinedString = combinedString.replace(/--ampersand--/g, "&"); | ||
| combinedString = combinedString.replace(/_/g, " "); | ||
| return combinedString.split("---"); | ||
| } | ||
| //#endregion | ||
| export { createIdentifier, decodeIdentifier }; | ||
| //# sourceMappingURL=path-ids.js.map |
| {"version":3,"file":"path-ids.js","names":[],"sources":["../../src/path-ids.ts"],"sourcesContent":["export function createIdentifier(strings: Array<string>): string {\n if (strings.length === 0) {\n throw new Error('Cannot create an identifier from an empty array')\n }\n\n const sortedStrings = [...strings].sort()\n const combinedString = sortedStrings.join('---') // Delimiter\n\n // Replace unsafe characters\n let safeString = combinedString.replace(/\\//g, '--slash--')\n safeString = safeString.replace(/\\\\/g, '--backslash--')\n safeString = safeString.replace(/\\?/g, '--question--')\n safeString = safeString.replace(/%/g, '--percent--')\n safeString = safeString.replace(/#/g, '--hash--')\n safeString = safeString.replace(/\\+/g, '--plus--')\n safeString = safeString.replace(/=/g, '--equals--')\n safeString = safeString.replace(/&/g, '--ampersand--')\n safeString = safeString.replace(/\\s/g, '_') // Replace spaces with underscores\n\n return safeString\n}\n\nexport function decodeIdentifier(identifier: string): Array<string> {\n if (!identifier) {\n return []\n }\n\n let combinedString = identifier.replace(/--slash--/g, '/')\n combinedString = combinedString.replace(/--backslash--/g, '\\\\')\n combinedString = combinedString.replace(/--question--/g, '?')\n combinedString = combinedString.replace(/--percent--/g, '%')\n combinedString = combinedString.replace(/--hash--/g, '#')\n combinedString = combinedString.replace(/--plus--/g, '+')\n combinedString = combinedString.replace(/--equals--/g, '=')\n combinedString = combinedString.replace(/--ampersand--/g, '&')\n combinedString = combinedString.replace(/_/g, ' ') // Restore spaces\n\n return combinedString.split('---')\n}\n"],"mappings":";AAAA,SAAgB,iBAAiB,SAAgC;AAC/D,KAAI,QAAQ,WAAW,EACrB,OAAM,IAAI,MAAM,kDAAkD;CAOpE,IAAI,aAJkB,CAAC,GAAG,QAAQ,CAAC,MAAM,CACJ,KAAK,MAAM,CAGhB,QAAQ,OAAO,YAAY;AAC3D,cAAa,WAAW,QAAQ,OAAO,gBAAgB;AACvD,cAAa,WAAW,QAAQ,OAAO,eAAe;AACtD,cAAa,WAAW,QAAQ,MAAM,cAAc;AACpD,cAAa,WAAW,QAAQ,MAAM,WAAW;AACjD,cAAa,WAAW,QAAQ,OAAO,WAAW;AAClD,cAAa,WAAW,QAAQ,MAAM,aAAa;AACnD,cAAa,WAAW,QAAQ,MAAM,gBAAgB;AACtD,cAAa,WAAW,QAAQ,OAAO,IAAI;AAE3C,QAAO;;AAGT,SAAgB,iBAAiB,YAAmC;AAClE,KAAI,CAAC,WACH,QAAO,EAAE;CAGX,IAAI,iBAAiB,WAAW,QAAQ,cAAc,IAAI;AAC1D,kBAAiB,eAAe,QAAQ,kBAAkB,KAAK;AAC/D,kBAAiB,eAAe,QAAQ,iBAAiB,IAAI;AAC7D,kBAAiB,eAAe,QAAQ,gBAAgB,IAAI;AAC5D,kBAAiB,eAAe,QAAQ,aAAa,IAAI;AACzD,kBAAiB,eAAe,QAAQ,aAAa,IAAI;AACzD,kBAAiB,eAAe,QAAQ,eAAe,IAAI;AAC3D,kBAAiB,eAAe,QAAQ,kBAAkB,IAAI;AAC9D,kBAAiB,eAAe,QAAQ,MAAM,IAAI;AAElD,QAAO,eAAe,MAAM,MAAM"} |
| import * as t from '@babel/types' | ||
| type IdentifierScopeFrame = { | ||
| kind: 'program' | 'function' | 'block' | ||
| bindings: Set<string> | ||
| } | ||
| type IdentifierScopeStack = Array<IdentifierScopeFrame> | ||
| export type ModuleInfoBinding = | ||
| | { | ||
| type: 'import' | ||
| source: string | ||
| importedName: string | ||
| } | ||
| | { | ||
| type: 'var' | ||
| init: t.Expression | null | ||
| } | ||
| export interface ExtractedModuleInfo { | ||
| bindings: Map<string, ModuleInfoBinding> | ||
| exports: Map<string, string> | ||
| reExportAllSources: Array<string> | ||
| } | ||
| function getModuleExportName(node: t.Identifier | t.StringLiteral) { | ||
| return t.isIdentifier(node) ? node.name : node.value | ||
| } | ||
| function addVariableDeclarationModuleInfo( | ||
| declaration: t.VariableDeclaration, | ||
| bindings: Map<string, ModuleInfoBinding>, | ||
| exportMap?: Map<string, string>, | ||
| ) { | ||
| for (const declarator of declaration.declarations) { | ||
| for (const name of collectIdentifiersFromPattern(declarator.id)) { | ||
| bindings.set(name, { | ||
| type: 'var', | ||
| init: declarator.init ?? null, | ||
| }) | ||
| exportMap?.set(name, name) | ||
| } | ||
| } | ||
| } | ||
| function addDeclarationModuleInfo( | ||
| declaration: t.Declaration, | ||
| bindings: Map<string, ModuleInfoBinding>, | ||
| exportMap?: Map<string, string>, | ||
| ) { | ||
| if (t.isVariableDeclaration(declaration)) { | ||
| addVariableDeclarationModuleInfo(declaration, bindings, exportMap) | ||
| return | ||
| } | ||
| if ( | ||
| (t.isFunctionDeclaration(declaration) || | ||
| t.isClassDeclaration(declaration)) && | ||
| declaration.id | ||
| ) { | ||
| bindings.set(declaration.id.name, { | ||
| type: 'var', | ||
| init: null, | ||
| }) | ||
| exportMap?.set(declaration.id.name, declaration.id.name) | ||
| } | ||
| } | ||
| function hasIdentifierBinding(scopes: IdentifierScopeStack, name: string) { | ||
| for (let i = scopes.length - 1; i >= 0; i--) { | ||
| if (scopes[i]!.bindings.has(name)) { | ||
| return true | ||
| } | ||
| } | ||
| return false | ||
| } | ||
| function currentIdentifierScope(scopes: IdentifierScopeStack) { | ||
| return scopes[scopes.length - 1]! | ||
| } | ||
| function nearestFunctionIdentifierScope(scopes: IdentifierScopeStack) { | ||
| for (let i = scopes.length - 1; i >= 0; i--) { | ||
| const scope = scopes[i]! | ||
| if (scope.kind === 'function' || scope.kind === 'program') { | ||
| return scope | ||
| } | ||
| } | ||
| return currentIdentifierScope(scopes) | ||
| } | ||
| function addIdentifierPatternBindings( | ||
| pattern: t.LVal | t.Node | null | undefined, | ||
| scope: IdentifierScopeFrame, | ||
| ) { | ||
| for (const name of collectIdentifiersFromPattern(pattern)) { | ||
| scope.bindings.add(name) | ||
| } | ||
| } | ||
| function addIdentifierDeclarationBindings( | ||
| declaration: t.Node, | ||
| scopes: IdentifierScopeStack, | ||
| ) { | ||
| if (t.isVariableDeclaration(declaration)) { | ||
| const scope = | ||
| declaration.kind === 'var' | ||
| ? nearestFunctionIdentifierScope(scopes) | ||
| : currentIdentifierScope(scopes) | ||
| for (const declarator of declaration.declarations) { | ||
| addIdentifierPatternBindings(declarator.id, scope) | ||
| } | ||
| return | ||
| } | ||
| if ( | ||
| (t.isFunctionDeclaration(declaration) || | ||
| t.isClassDeclaration(declaration) || | ||
| t.isTSTypeAliasDeclaration(declaration) || | ||
| t.isTSInterfaceDeclaration(declaration) || | ||
| t.isTSEnumDeclaration(declaration)) && | ||
| declaration.id | ||
| ) { | ||
| currentIdentifierScope(scopes).bindings.add(declaration.id.name) | ||
| } | ||
| } | ||
| function addIdentifierImportBindings( | ||
| node: t.ImportDeclaration, | ||
| scope: IdentifierScopeFrame, | ||
| ) { | ||
| for (const specifier of node.specifiers) { | ||
| scope.bindings.add(specifier.local.name) | ||
| } | ||
| } | ||
| function createNestedIdentifierScope( | ||
| kind: IdentifierScopeFrame['kind'], | ||
| scopes: IdentifierScopeStack, | ||
| ): IdentifierScopeStack { | ||
| return [...scopes, { kind, bindings: new Set() }] | ||
| } | ||
| function addIdentifierBlockBindings( | ||
| body: Array<t.Node>, | ||
| scopes: IdentifierScopeStack, | ||
| ) { | ||
| for (const statement of body) { | ||
| if (t.isImportDeclaration(statement)) { | ||
| addIdentifierImportBindings(statement, currentIdentifierScope(scopes)) | ||
| } else if (t.isExportNamedDeclaration(statement) && statement.declaration) { | ||
| addIdentifierDeclarationBindings(statement.declaration, scopes) | ||
| } else { | ||
| addIdentifierDeclarationBindings(statement, scopes) | ||
| } | ||
| } | ||
| } | ||
| function walkIdentifierChildren( | ||
| current: t.Node, | ||
| parent: t.Node | undefined, | ||
| scopes: IdentifierScopeStack, | ||
| ids: Set<string>, | ||
| ) { | ||
| for (const key of t.VISITOR_KEYS[current.type] ?? []) { | ||
| const child = (current as any)[key] | ||
| if (Array.isArray(child)) { | ||
| for (const item of child) { | ||
| if (item && typeof item.type === 'string') { | ||
| walkIdentifierNode(item, current, parent, key, scopes, ids) | ||
| } | ||
| } | ||
| } else if (child && typeof child.type === 'string') { | ||
| walkIdentifierNode(child, current, parent, key, scopes, ids) | ||
| } | ||
| } | ||
| } | ||
| function walkIdentifierNode( | ||
| current: t.Node | null | undefined, | ||
| parent: t.Node | undefined, | ||
| grandparent: t.Node | undefined, | ||
| parentKey: string | undefined, | ||
| scopes: IdentifierScopeStack, | ||
| ids: Set<string>, | ||
| ) { | ||
| if (!current) return | ||
| if (t.isIdentifier(current)) { | ||
| if ( | ||
| (!parent || t.isReferenced(current, parent, grandparent)) && | ||
| !hasIdentifierBinding(scopes, current.name) | ||
| ) { | ||
| ids.add(current.name) | ||
| } | ||
| return | ||
| } | ||
| if (t.isJSXIdentifier(current)) { | ||
| if (parent && t.isJSXAttribute(parent) && parentKey === 'name') { | ||
| return | ||
| } | ||
| if (parent && t.isJSXMemberExpression(parent) && parentKey === 'property') { | ||
| return | ||
| } | ||
| const first = current.name[0] | ||
| if (first && first === first.toLowerCase()) { | ||
| return | ||
| } | ||
| if (!hasIdentifierBinding(scopes, current.name)) { | ||
| ids.add(current.name) | ||
| } | ||
| return | ||
| } | ||
| if (t.isProgram(current)) { | ||
| const nestedScopes = createNestedIdentifierScope('program', scopes) | ||
| addIdentifierBlockBindings(current.body, nestedScopes) | ||
| for (const child of current.body) { | ||
| walkIdentifierNode(child, current, parent, 'body', nestedScopes, ids) | ||
| } | ||
| return | ||
| } | ||
| if (t.isBlockStatement(current)) { | ||
| const nestedScopes = createNestedIdentifierScope('block', scopes) | ||
| addIdentifierBlockBindings(current.body, nestedScopes) | ||
| for (const child of current.body) { | ||
| walkIdentifierNode(child, current, parent, 'body', nestedScopes, ids) | ||
| } | ||
| return | ||
| } | ||
| if ( | ||
| t.isFunctionDeclaration(current) || | ||
| t.isFunctionExpression(current) || | ||
| t.isArrowFunctionExpression(current) || | ||
| t.isObjectMethod(current) || | ||
| t.isClassMethod(current) || | ||
| t.isClassPrivateMethod(current) | ||
| ) { | ||
| if (t.isFunctionDeclaration(current) && current.id) { | ||
| currentIdentifierScope(scopes).bindings.add(current.id.name) | ||
| } | ||
| const nestedScopes = createNestedIdentifierScope('function', scopes) | ||
| if ( | ||
| (t.isFunctionDeclaration(current) || t.isFunctionExpression(current)) && | ||
| current.id | ||
| ) { | ||
| currentIdentifierScope(nestedScopes).bindings.add(current.id.name) | ||
| } | ||
| for (const param of current.params) { | ||
| addIdentifierPatternBindings(param, currentIdentifierScope(nestedScopes)) | ||
| } | ||
| walkIdentifierChildren(current, parent, nestedScopes, ids) | ||
| return | ||
| } | ||
| if (t.isCatchClause(current)) { | ||
| const nestedScopes = createNestedIdentifierScope('block', scopes) | ||
| addIdentifierPatternBindings( | ||
| current.param, | ||
| currentIdentifierScope(nestedScopes), | ||
| ) | ||
| walkIdentifierNode( | ||
| current.param, | ||
| current, | ||
| parent, | ||
| 'param', | ||
| nestedScopes, | ||
| ids, | ||
| ) | ||
| walkIdentifierNode(current.body, current, parent, 'body', nestedScopes, ids) | ||
| return | ||
| } | ||
| if (t.isImportDeclaration(current)) { | ||
| addIdentifierImportBindings(current, currentIdentifierScope(scopes)) | ||
| return | ||
| } | ||
| if (t.isClassDeclaration(current) || t.isClassExpression(current)) { | ||
| if (t.isClassDeclaration(current) && current.id) { | ||
| currentIdentifierScope(scopes).bindings.add(current.id.name) | ||
| } | ||
| const nestedScopes = current.id | ||
| ? createNestedIdentifierScope('block', scopes) | ||
| : scopes | ||
| if (current.id) { | ||
| currentIdentifierScope(nestedScopes).bindings.add(current.id.name) | ||
| } | ||
| walkIdentifierChildren(current, parent, nestedScopes, ids) | ||
| return | ||
| } | ||
| if (t.isVariableDeclaration(current)) { | ||
| addIdentifierDeclarationBindings(current, scopes) | ||
| } else if (t.isVariableDeclarator(current)) { | ||
| const scope = | ||
| parent && t.isVariableDeclaration(parent) && parent.kind === 'var' | ||
| ? nearestFunctionIdentifierScope(scopes) | ||
| : currentIdentifierScope(scopes) | ||
| addIdentifierPatternBindings(current.id, scope) | ||
| } else if ( | ||
| t.isTSTypeAliasDeclaration(current) || | ||
| t.isTSInterfaceDeclaration(current) || | ||
| t.isTSEnumDeclaration(current) | ||
| ) { | ||
| currentIdentifierScope(scopes).bindings.add(current.id.name) | ||
| } | ||
| walkIdentifierChildren(current, parent, scopes, ids) | ||
| } | ||
| /** | ||
| * Recursively walk an AST node and collect referenced identifier-like names. | ||
| * This avoids Babel path/scope allocation for module-level dependency scans. | ||
| */ | ||
| export function collectIdentifiersFromNode(node: t.Node): Set<string> { | ||
| const ids = new Set<string>() | ||
| walkIdentifierNode( | ||
| node, | ||
| undefined, | ||
| undefined, | ||
| undefined, | ||
| [{ kind: 'program', bindings: new Set() }], | ||
| ids, | ||
| ) | ||
| return ids | ||
| } | ||
| export function collectIdentifiersFromPattern( | ||
| node: t.LVal | t.Node | null | undefined, | ||
| ): Array<string> { | ||
| if (!node) { | ||
| return [] | ||
| } | ||
| if (t.isIdentifier(node)) { | ||
| return [node.name] | ||
| } | ||
| if (t.isAssignmentPattern(node)) { | ||
| return collectIdentifiersFromPattern(node.left) | ||
| } | ||
| if (t.isRestElement(node)) { | ||
| return collectIdentifiersFromPattern(node.argument) | ||
| } | ||
| if (t.isObjectPattern(node)) { | ||
| return node.properties.flatMap((prop) => { | ||
| if (t.isObjectProperty(prop)) { | ||
| return collectIdentifiersFromPattern(prop.value as t.LVal) | ||
| } | ||
| if (t.isRestElement(prop)) { | ||
| return collectIdentifiersFromPattern(prop.argument) | ||
| } | ||
| return [] | ||
| }) | ||
| } | ||
| if (t.isArrayPattern(node)) { | ||
| return node.elements.flatMap((element) => | ||
| collectIdentifiersFromPattern(element), | ||
| ) | ||
| } | ||
| return [] | ||
| } | ||
| export function collectLocalBindingsFromStatement( | ||
| node: t.Statement | t.ModuleDeclaration, | ||
| bindings: Set<string>, | ||
| ) { | ||
| const declaration = | ||
| t.isExportNamedDeclaration(node) && node.declaration | ||
| ? node.declaration | ||
| : t.isExportDefaultDeclaration(node) | ||
| ? node.declaration | ||
| : node | ||
| if (t.isVariableDeclaration(declaration)) { | ||
| for (const declarator of declaration.declarations) { | ||
| for (const name of collectIdentifiersFromPattern(declarator.id)) { | ||
| bindings.add(name) | ||
| } | ||
| } | ||
| } else if (t.isFunctionDeclaration(declaration) && declaration.id) { | ||
| bindings.add(declaration.id.name) | ||
| } else if (t.isClassDeclaration(declaration) && declaration.id) { | ||
| bindings.add(declaration.id.name) | ||
| } | ||
| } | ||
| export function extractModuleInfoFromAst(ast: t.File): ExtractedModuleInfo { | ||
| const bindings = new Map<string, ModuleInfoBinding>() | ||
| const exportMap = new Map<string, string>() | ||
| const reExportAllSources: Array<string> = [] | ||
| for (const node of ast.program.body) { | ||
| if (t.isImportDeclaration(node)) { | ||
| const source = node.source.value | ||
| for (const specifier of node.specifiers) { | ||
| if (t.isImportSpecifier(specifier)) { | ||
| bindings.set(specifier.local.name, { | ||
| type: 'import', | ||
| source, | ||
| importedName: getModuleExportName(specifier.imported), | ||
| }) | ||
| } else if (t.isImportDefaultSpecifier(specifier)) { | ||
| bindings.set(specifier.local.name, { | ||
| type: 'import', | ||
| source, | ||
| importedName: 'default', | ||
| }) | ||
| } else if (t.isImportNamespaceSpecifier(specifier)) { | ||
| bindings.set(specifier.local.name, { | ||
| type: 'import', | ||
| source, | ||
| importedName: '*', | ||
| }) | ||
| } | ||
| } | ||
| continue | ||
| } | ||
| if (t.isVariableDeclaration(node)) { | ||
| addVariableDeclarationModuleInfo(node, bindings) | ||
| continue | ||
| } | ||
| if (t.isFunctionDeclaration(node) || t.isClassDeclaration(node)) { | ||
| addDeclarationModuleInfo(node, bindings) | ||
| continue | ||
| } | ||
| if (t.isExportNamedDeclaration(node)) { | ||
| if (node.declaration) { | ||
| addDeclarationModuleInfo(node.declaration, bindings, exportMap) | ||
| } | ||
| for (const specifier of node.specifiers) { | ||
| if (t.isExportNamespaceSpecifier(specifier)) { | ||
| const exported = getModuleExportName(specifier.exported) | ||
| exportMap.set(exported, exported) | ||
| if (node.source) { | ||
| bindings.set(exported, { | ||
| type: 'import', | ||
| source: node.source.value, | ||
| importedName: '*', | ||
| }) | ||
| } | ||
| } else if (t.isExportSpecifier(specifier)) { | ||
| const local = getModuleExportName(specifier.local) | ||
| const exported = getModuleExportName(specifier.exported) | ||
| exportMap.set(exported, local) | ||
| if (node.source) { | ||
| bindings.set(local, { | ||
| type: 'import', | ||
| source: node.source.value, | ||
| importedName: local, | ||
| }) | ||
| } | ||
| } | ||
| } | ||
| continue | ||
| } | ||
| if (t.isExportDefaultDeclaration(node)) { | ||
| const declaration = node.declaration | ||
| if (t.isIdentifier(declaration)) { | ||
| exportMap.set('default', declaration.name) | ||
| } else if ( | ||
| (t.isFunctionDeclaration(declaration) || | ||
| t.isClassDeclaration(declaration)) && | ||
| declaration.id | ||
| ) { | ||
| bindings.set(declaration.id.name, { | ||
| type: 'var', | ||
| init: null, | ||
| }) | ||
| exportMap.set('default', declaration.id.name) | ||
| } else { | ||
| const synth = '__default_export__' | ||
| bindings.set(synth, { | ||
| type: 'var', | ||
| init: t.isExpression(declaration) ? declaration : null, | ||
| }) | ||
| exportMap.set('default', synth) | ||
| } | ||
| continue | ||
| } | ||
| if (t.isExportAllDeclaration(node)) { | ||
| reExportAllSources.push(node.source.value) | ||
| } | ||
| } | ||
| return { | ||
| bindings, | ||
| exports: exportMap, | ||
| reExportAllSources, | ||
| } | ||
| } | ||
| export function buildDeclarationMap(ast: t.File): Map<string, t.Node> { | ||
| const map = new Map<string, t.Node>() | ||
| for (const statement of ast.program.body) { | ||
| const declaration = | ||
| t.isExportNamedDeclaration(statement) && statement.declaration | ||
| ? statement.declaration | ||
| : t.isExportDefaultDeclaration(statement) | ||
| ? statement.declaration | ||
| : statement | ||
| if (t.isVariableDeclaration(declaration)) { | ||
| for (const declarator of declaration.declarations) { | ||
| for (const name of collectIdentifiersFromPattern(declarator.id)) { | ||
| map.set(name, declarator) | ||
| } | ||
| } | ||
| } else if (t.isFunctionDeclaration(declaration) && declaration.id) { | ||
| map.set(declaration.id.name, declaration) | ||
| } else if (t.isClassDeclaration(declaration) && declaration.id) { | ||
| map.set(declaration.id.name, declaration) | ||
| } | ||
| } | ||
| return map | ||
| } | ||
| export function buildDependencyGraph( | ||
| declarationMap: Map<string, t.Node>, | ||
| localBindings: Set<string>, | ||
| ): Map<string, Set<string>> { | ||
| const graph = new Map<string, Set<string>>() | ||
| for (const [name, declarationNode] of declarationMap) { | ||
| if (!localBindings.has(name)) continue | ||
| const dependencies = new Set<string>() | ||
| for (const id of collectIdentifiersFromNode(declarationNode)) { | ||
| if (id !== name && localBindings.has(id)) { | ||
| dependencies.add(id) | ||
| } | ||
| } | ||
| graph.set(name, dependencies) | ||
| } | ||
| return graph | ||
| } | ||
| export function collectModuleLevelRefsFromNode( | ||
| node: t.Node, | ||
| localModuleLevelBindings: Set<string>, | ||
| ): Set<string> { | ||
| const refs = new Set<string>() | ||
| for (const name of collectIdentifiersFromNode(node)) { | ||
| if (localModuleLevelBindings.has(name)) { | ||
| refs.add(name) | ||
| } | ||
| } | ||
| return refs | ||
| } | ||
| export function expandTransitively( | ||
| bindings: Set<string>, | ||
| dependencyGraph: Map<string, Set<string>>, | ||
| ) { | ||
| const queue = [...bindings] | ||
| const visited = new Set<string>() | ||
| while (queue.length > 0) { | ||
| const name = queue.pop()! | ||
| if (visited.has(name)) continue | ||
| visited.add(name) | ||
| const dependencies = dependencyGraph.get(name) | ||
| if (!dependencies) continue | ||
| for (const dependency of dependencies) { | ||
| if (!bindings.has(dependency)) { | ||
| bindings.add(dependency) | ||
| queue.push(dependency) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| export function expandSharedDestructuredDeclarators( | ||
| ast: t.File, | ||
| refsByGroup: Map<string, Set<number>>, | ||
| sharedBindings: Set<string>, | ||
| ) { | ||
| for (const statement of ast.program.body) { | ||
| const declaration = | ||
| t.isExportNamedDeclaration(statement) && statement.declaration | ||
| ? statement.declaration | ||
| : statement | ||
| if (!t.isVariableDeclaration(declaration)) continue | ||
| for (const declarator of declaration.declarations) { | ||
| if ( | ||
| !t.isObjectPattern(declarator.id) && | ||
| !t.isArrayPattern(declarator.id) | ||
| ) { | ||
| continue | ||
| } | ||
| const names = collectIdentifiersFromPattern(declarator.id) | ||
| const usedGroups = new Set<number>() | ||
| for (const name of names) { | ||
| const groups = refsByGroup.get(name) | ||
| if (!groups) continue | ||
| for (const group of groups) { | ||
| usedGroups.add(group) | ||
| } | ||
| } | ||
| if (usedGroups.size >= 2) { | ||
| for (const name of names) { | ||
| sharedBindings.add(name) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| export function expandDestructuredDeclarations( | ||
| ast: t.File, | ||
| bindings: Set<string>, | ||
| ) { | ||
| for (const statement of ast.program.body) { | ||
| const declaration = | ||
| t.isExportNamedDeclaration(statement) && statement.declaration | ||
| ? statement.declaration | ||
| : statement | ||
| if (!t.isVariableDeclaration(declaration)) continue | ||
| for (const declarator of declaration.declarations) { | ||
| if ( | ||
| !t.isObjectPattern(declarator.id) && | ||
| !t.isArrayPattern(declarator.id) | ||
| ) { | ||
| continue | ||
| } | ||
| const names = collectIdentifiersFromPattern(declarator.id) | ||
| if (names.some((name) => bindings.has(name))) { | ||
| for (const name of names) { | ||
| bindings.add(name) | ||
| } | ||
| } | ||
| } | ||
| } | ||
| } | ||
| export function removeBindingsTransitivelyDependingOn( | ||
| bindings: Set<string>, | ||
| dependencyGraph: Map<string, Set<string>>, | ||
| roots: Iterable<string>, | ||
| ) { | ||
| const reverseGraph = new Map<string, Set<string>>() | ||
| for (const [name, dependencies] of dependencyGraph) { | ||
| for (const dependency of dependencies) { | ||
| let parents = reverseGraph.get(dependency) | ||
| if (!parents) { | ||
| parents = new Set() | ||
| reverseGraph.set(dependency, parents) | ||
| } | ||
| parents.add(name) | ||
| } | ||
| } | ||
| const visited = new Set<string>() | ||
| const queue = [...roots] | ||
| while (queue.length > 0) { | ||
| const current = queue.pop()! | ||
| if (visited.has(current)) continue | ||
| visited.add(current) | ||
| const parents = reverseGraph.get(current) | ||
| if (!parents) continue | ||
| for (const parent of parents) { | ||
| if (!visited.has(parent)) { | ||
| queue.push(parent) | ||
| } | ||
| } | ||
| } | ||
| for (const name of [...bindings]) { | ||
| if (visited.has(name)) { | ||
| bindings.delete(name) | ||
| } | ||
| } | ||
| } | ||
| export function removeModuleLevelBindings( | ||
| ast: t.File, | ||
| namesToRemove: Set<string>, | ||
| ) { | ||
| ast.program.body = ast.program.body.filter((statement) => { | ||
| const declaration = | ||
| t.isExportNamedDeclaration(statement) && statement.declaration | ||
| ? statement.declaration | ||
| : statement | ||
| if (t.isVariableDeclaration(declaration)) { | ||
| declaration.declarations = declaration.declarations.filter( | ||
| (declarator) => | ||
| !collectIdentifiersFromPattern(declarator.id).some((name) => | ||
| namesToRemove.has(name), | ||
| ), | ||
| ) | ||
| return declaration.declarations.length > 0 | ||
| } | ||
| if (t.isFunctionDeclaration(declaration) && declaration.id) { | ||
| return !namesToRemove.has(declaration.id.name) | ||
| } | ||
| if (t.isClassDeclaration(declaration) && declaration.id) { | ||
| return !namesToRemove.has(declaration.id.name) | ||
| } | ||
| if (t.isExportDefaultDeclaration(statement)) { | ||
| const defaultDeclaration = statement.declaration | ||
| if ( | ||
| (t.isFunctionDeclaration(defaultDeclaration) || | ||
| t.isClassDeclaration(defaultDeclaration)) && | ||
| defaultDeclaration.id | ||
| ) { | ||
| return !namesToRemove.has(defaultDeclaration.id.name) | ||
| } | ||
| } | ||
| return true | ||
| }) | ||
| } | ||
| export function retainModuleLevelDeclarations( | ||
| ast: t.File, | ||
| bindingsToKeep: Set<string>, | ||
| ) { | ||
| ast.program.body = ast.program.body.filter((statement) => { | ||
| if (t.isImportDeclaration(statement)) return true | ||
| const declaration = | ||
| t.isExportNamedDeclaration(statement) && statement.declaration | ||
| ? statement.declaration | ||
| : statement | ||
| if (t.isVariableDeclaration(declaration)) { | ||
| declaration.declarations = declaration.declarations.filter((declarator) => | ||
| collectIdentifiersFromPattern(declarator.id).some((name) => | ||
| bindingsToKeep.has(name), | ||
| ), | ||
| ) | ||
| return declaration.declarations.length > 0 | ||
| } | ||
| if (t.isFunctionDeclaration(declaration) && declaration.id) { | ||
| return bindingsToKeep.has(declaration.id.name) | ||
| } | ||
| if (t.isClassDeclaration(declaration) && declaration.id) { | ||
| return bindingsToKeep.has(declaration.id.name) | ||
| } | ||
| return false | ||
| }) | ||
| } | ||
| export function unwrapExportedDeclarations(ast: t.File) { | ||
| const body: Array<t.Statement | t.ModuleDeclaration> = [] | ||
| for (const statement of ast.program.body) { | ||
| if (t.isExportNamedDeclaration(statement)) { | ||
| if (statement.declaration) { | ||
| body.push(statement.declaration) | ||
| } | ||
| continue | ||
| } | ||
| if (t.isExportDefaultDeclaration(statement)) { | ||
| const declaration = statement.declaration | ||
| if ( | ||
| (t.isFunctionDeclaration(declaration) || | ||
| t.isClassDeclaration(declaration)) && | ||
| declaration.id | ||
| ) { | ||
| body.push(declaration) | ||
| } | ||
| continue | ||
| } | ||
| if (t.isExportAllDeclaration(statement)) { | ||
| continue | ||
| } | ||
| body.push(statement) | ||
| } | ||
| ast.program.body = body | ||
| } | ||
| export function stripUnreferencedTopLevelExpressionStatements(ast: t.File) { | ||
| const locallyBound = new Set<string>() | ||
| for (const statement of ast.program.body) { | ||
| collectLocalBindingsFromStatement(statement, locallyBound) | ||
| } | ||
| ast.program.body = ast.program.body.filter((statement) => { | ||
| if (!t.isExpressionStatement(statement)) return true | ||
| for (const name of collectIdentifiersFromNode(statement)) { | ||
| if (locallyBound.has(name)) { | ||
| return true | ||
| } | ||
| } | ||
| return false | ||
| }) | ||
| } |
| export function createIdentifier(strings: Array<string>): string { | ||
| if (strings.length === 0) { | ||
| throw new Error('Cannot create an identifier from an empty array') | ||
| } | ||
| const sortedStrings = [...strings].sort() | ||
| const combinedString = sortedStrings.join('---') // Delimiter | ||
| // Replace unsafe characters | ||
| let safeString = combinedString.replace(/\//g, '--slash--') | ||
| safeString = safeString.replace(/\\/g, '--backslash--') | ||
| safeString = safeString.replace(/\?/g, '--question--') | ||
| safeString = safeString.replace(/%/g, '--percent--') | ||
| safeString = safeString.replace(/#/g, '--hash--') | ||
| safeString = safeString.replace(/\+/g, '--plus--') | ||
| safeString = safeString.replace(/=/g, '--equals--') | ||
| safeString = safeString.replace(/&/g, '--ampersand--') | ||
| safeString = safeString.replace(/\s/g, '_') // Replace spaces with underscores | ||
| return safeString | ||
| } | ||
| export function decodeIdentifier(identifier: string): Array<string> { | ||
| if (!identifier) { | ||
| return [] | ||
| } | ||
| let combinedString = identifier.replace(/--slash--/g, '/') | ||
| combinedString = combinedString.replace(/--backslash--/g, '\\') | ||
| combinedString = combinedString.replace(/--question--/g, '?') | ||
| combinedString = combinedString.replace(/--percent--/g, '%') | ||
| combinedString = combinedString.replace(/--hash--/g, '#') | ||
| combinedString = combinedString.replace(/--plus--/g, '+') | ||
| combinedString = combinedString.replace(/--equals--/g, '=') | ||
| combinedString = combinedString.replace(/--ampersand--/g, '&') | ||
| combinedString = combinedString.replace(/_/g, ' ') // Restore spaces | ||
| return combinedString.split('---') | ||
| } |
+19
-0
@@ -6,5 +6,19 @@ Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" }); | ||
| const require_copy_files_plugin = require("./copy-files-plugin.cjs"); | ||
| const require_path_ids = require("./path-ids.cjs"); | ||
| const require_compiler_helpers = require("./compiler-helpers.cjs"); | ||
| let babel_dead_code_elimination = require("babel-dead-code-elimination"); | ||
| exports.buildDeclarationMap = require_compiler_helpers.buildDeclarationMap; | ||
| exports.buildDependencyGraph = require_compiler_helpers.buildDependencyGraph; | ||
| exports.collectIdentifiersFromNode = require_compiler_helpers.collectIdentifiersFromNode; | ||
| exports.collectIdentifiersFromPattern = require_compiler_helpers.collectIdentifiersFromPattern; | ||
| exports.collectLocalBindingsFromStatement = require_compiler_helpers.collectLocalBindingsFromStatement; | ||
| exports.collectModuleLevelRefsFromNode = require_compiler_helpers.collectModuleLevelRefsFromNode; | ||
| exports.copyFilesPlugin = require_copy_files_plugin.copyFilesPlugin; | ||
| exports.createIdentifier = require_path_ids.createIdentifier; | ||
| exports.deadCodeElimination = require_ast.deadCodeElimination; | ||
| exports.decodeIdentifier = require_path_ids.decodeIdentifier; | ||
| exports.expandDestructuredDeclarations = require_compiler_helpers.expandDestructuredDeclarations; | ||
| exports.expandSharedDestructuredDeclarators = require_compiler_helpers.expandSharedDestructuredDeclarators; | ||
| exports.expandTransitively = require_compiler_helpers.expandTransitively; | ||
| exports.extractModuleInfoFromAst = require_compiler_helpers.extractModuleInfoFromAst; | ||
| exports.findReferencedIdentifiers = babel_dead_code_elimination.findReferencedIdentifiers; | ||
@@ -14,2 +28,7 @@ exports.generateFromAst = require_ast.generateFromAst; | ||
| exports.parseAst = require_ast.parseAst; | ||
| exports.removeBindingsTransitivelyDependingOn = require_compiler_helpers.removeBindingsTransitivelyDependingOn; | ||
| exports.removeModuleLevelBindings = require_compiler_helpers.removeModuleLevelBindings; | ||
| exports.retainModuleLevelDeclarations = require_compiler_helpers.retainModuleLevelDeclarations; | ||
| exports.stripTypeExports = require_ast.stripTypeExports; | ||
| exports.stripUnreferencedTopLevelExpressionStatements = require_compiler_helpers.stripUnreferencedTopLevelExpressionStatements; | ||
| exports.unwrapExportedDeclarations = require_compiler_helpers.unwrapExportedDeclarations; |
@@ -5,1 +5,4 @@ export { parseAst, generateFromAst, deadCodeElimination, findReferencedIdentifiers, stripTypeExports, } from './ast.cjs'; | ||
| export { copyFilesPlugin } from './copy-files-plugin.cjs'; | ||
| export { createIdentifier, decodeIdentifier } from './path-ids.cjs'; | ||
| export { buildDeclarationMap, buildDependencyGraph, collectIdentifiersFromNode, collectIdentifiersFromPattern, collectLocalBindingsFromStatement, collectModuleLevelRefsFromNode, expandDestructuredDeclarations, expandSharedDestructuredDeclarators, expandTransitively, extractModuleInfoFromAst, removeBindingsTransitivelyDependingOn, removeModuleLevelBindings, retainModuleLevelDeclarations, stripUnreferencedTopLevelExpressionStatements, unwrapExportedDeclarations, } from './compiler-helpers.cjs'; | ||
| export type { ExtractedModuleInfo, ModuleInfoBinding } from './compiler-helpers.cjs'; |
@@ -5,1 +5,4 @@ export { parseAst, generateFromAst, deadCodeElimination, findReferencedIdentifiers, stripTypeExports, } from './ast.js'; | ||
| export { copyFilesPlugin } from './copy-files-plugin.js'; | ||
| export { createIdentifier, decodeIdentifier } from './path-ids.js'; | ||
| export { buildDeclarationMap, buildDependencyGraph, collectIdentifiersFromNode, collectIdentifiersFromPattern, collectLocalBindingsFromStatement, collectModuleLevelRefsFromNode, expandDestructuredDeclarations, expandSharedDestructuredDeclarators, expandTransitively, extractModuleInfoFromAst, removeBindingsTransitivelyDependingOn, removeModuleLevelBindings, retainModuleLevelDeclarations, stripUnreferencedTopLevelExpressionStatements, unwrapExportedDeclarations, } from './compiler-helpers.js'; | ||
| export type { ExtractedModuleInfo, ModuleInfoBinding } from './compiler-helpers.js'; |
| import { deadCodeElimination, findReferencedIdentifiers, generateFromAst, parseAst, stripTypeExports } from "./ast.js"; | ||
| import { logDiff } from "./logger.js"; | ||
| import { copyFilesPlugin } from "./copy-files-plugin.js"; | ||
| export { copyFilesPlugin, deadCodeElimination, findReferencedIdentifiers, generateFromAst, logDiff, parseAst, stripTypeExports }; | ||
| import { createIdentifier, decodeIdentifier } from "./path-ids.js"; | ||
| import { buildDeclarationMap, buildDependencyGraph, collectIdentifiersFromNode, collectIdentifiersFromPattern, collectLocalBindingsFromStatement, collectModuleLevelRefsFromNode, expandDestructuredDeclarations, expandSharedDestructuredDeclarators, expandTransitively, extractModuleInfoFromAst, removeBindingsTransitivelyDependingOn, removeModuleLevelBindings, retainModuleLevelDeclarations, stripUnreferencedTopLevelExpressionStatements, unwrapExportedDeclarations } from "./compiler-helpers.js"; | ||
| export { buildDeclarationMap, buildDependencyGraph, collectIdentifiersFromNode, collectIdentifiersFromPattern, collectLocalBindingsFromStatement, collectModuleLevelRefsFromNode, copyFilesPlugin, createIdentifier, deadCodeElimination, decodeIdentifier, expandDestructuredDeclarations, expandSharedDestructuredDeclarators, expandTransitively, extractModuleInfoFromAst, findReferencedIdentifiers, generateFromAst, logDiff, parseAst, removeBindingsTransitivelyDependingOn, removeModuleLevelBindings, retainModuleLevelDeclarations, stripTypeExports, stripUnreferencedTopLevelExpressionStatements, unwrapExportedDeclarations }; |
+1
-1
| { | ||
| "name": "@tanstack/router-utils", | ||
| "version": "1.162.0", | ||
| "version": "1.162.1", | ||
| "description": "Modern and scalable routing for React applications", | ||
@@ -5,0 +5,0 @@ "author": "Tanner Linsley", |
+21
-0
@@ -12,1 +12,22 @@ export { | ||
| export { copyFilesPlugin } from './copy-files-plugin' | ||
| export { createIdentifier, decodeIdentifier } from './path-ids' | ||
| export { | ||
| buildDeclarationMap, | ||
| buildDependencyGraph, | ||
| collectIdentifiersFromNode, | ||
| collectIdentifiersFromPattern, | ||
| collectLocalBindingsFromStatement, | ||
| collectModuleLevelRefsFromNode, | ||
| expandDestructuredDeclarations, | ||
| expandSharedDestructuredDeclarators, | ||
| expandTransitively, | ||
| extractModuleInfoFromAst, | ||
| removeBindingsTransitivelyDependingOn, | ||
| removeModuleLevelBindings, | ||
| retainModuleLevelDeclarations, | ||
| stripUnreferencedTopLevelExpressionStatements, | ||
| unwrapExportedDeclarations, | ||
| } from './compiler-helpers' | ||
| export type { ExtractedModuleInfo, ModuleInfoBinding } from './compiler-helpers' |
New alerts
Major refactor
Supply chain riskPackage has recently undergone a major refactor. It may be unstable or indicate significant internal changes. Use caution when updating to versions that include significant changes.
Found 1 instance in 1 package
Improved metrics
- Total package byte prevSize
208960
254.77%- Number of package files
43
48.28%- Lines of code
2442
234.06%Worsened metrics
- Number of medium supply chain risk alerts
1
Infinity%No dependency changes