Remove ts.{Map,Set,ESMap,Iterator} and associated types (microsoft#51439)

Author: jakebailey

src/.eslintrc.json

@@ -13,12 +13,7 @@
             { "name": "clearInterval" },
             { "name": "setImmediate" },
             { "name": "clearImmediate" },
-            { "name": "performance" },
-            { "name": "Iterator" },
-            { "name": "Map" },
-            { "name": "ReadonlyMap" },
-            { "name": "Set" },
-            { "name": "ReadonlySet" }
+            { "name": "performance" }
         ]
     },
     "overrides": [

src/cancellationToken/tsconfig.json

@@ -4,9 +4,6 @@
         "module": "commonjs",
         "types": [
             "node"
-        ],
-        "lib": [
-            "es6"
         ]
     },
     "include": ["**/*"]

src/compiler/binder.ts

@@ -9,7 +9,7 @@ import {
     createSymbolTable, Debug, Declaration, declarationNameToString, DeleteExpression, DestructuringAssignment,
     DiagnosticCategory, DiagnosticMessage, DiagnosticRelatedInformation, Diagnostics, DiagnosticWithLocation,
     DoStatement, DynamicNamedDeclaration, ElementAccessChain, ElementAccessExpression, EntityNameExpression,
-    EnumDeclaration, escapeLeadingUnderscores, ESMap, every, ExportAssignment, exportAssignmentIsAlias,
+    EnumDeclaration, escapeLeadingUnderscores, every, ExportAssignment, exportAssignmentIsAlias,
     ExportDeclaration, ExportSpecifier, Expression, ExpressionStatement, findAncestor, FlowFlags, FlowLabel, FlowNode,
     FlowReduceLabel, forEach, forEachChild, ForInOrOfStatement, ForStatement, FunctionDeclaration, FunctionExpression,
     FunctionLikeDeclaration, GetAccessorDeclaration, getAssignedExpandoInitializer, getAssignmentDeclarationKind,
@@ -45,12 +45,12 @@ import {
     isVariableDeclaration, isVariableDeclarationInitializedToBareOrAccessedRequire, isVariableStatement,
     JSDocCallbackTag, JSDocClassTag, JSDocEnumTag, JSDocFunctionType, JSDocParameterTag, JSDocPropertyLikeTag,
     JSDocSignature, JSDocTypedefTag, JSDocTypeLiteral, JsxAttribute, JsxAttributes, LabeledStatement, length,
-    LiteralLikeElementAccessExpression, Map, MappedTypeNode, MethodDeclaration, ModifierFlags, ModuleBlock,
+    LiteralLikeElementAccessExpression, MappedTypeNode, MethodDeclaration, ModifierFlags, ModuleBlock,
     ModuleDeclaration, Mutable, NamespaceExportDeclaration, Node, NodeArray, NodeFlags, nodeHasName, nodeIsMissing,
     nodeIsPresent, NonNullChain, NonNullExpression, NumericLiteral, objectAllocator, ObjectLiteralExpression,
     OptionalChain, ParameterDeclaration, ParenthesizedExpression, Pattern, PatternAmbientModule, perfLogger,
     PostfixUnaryExpression, PrefixUnaryExpression, PrivateIdentifier, PropertyAccessChain, PropertyAccessExpression,
-    PropertyDeclaration, PropertySignature, removeFileExtension, ReturnStatement, ScriptTarget, Set,
+    PropertyDeclaration, PropertySignature, removeFileExtension, ReturnStatement, ScriptTarget,
     SetAccessorDeclaration, setParent, setParentRecursive, setValueDeclaration, ShorthandPropertyAssignment,
     shouldPreserveConstEnums, SignatureDeclaration, skipParentheses, sliceAfter, some, SourceFile, SpreadElement,
     Statement, StringLiteral, SwitchStatement, Symbol, SymbolFlags, symbolName, SymbolTable, SyntaxKind, TextRange,
@@ -76,7 +76,7 @@ interface ActiveLabel {
 }
 
 /** @internal */
-export function getModuleInstanceState(node: ModuleDeclaration, visited?: ESMap<number, ModuleInstanceState | undefined>): ModuleInstanceState {
+export function getModuleInstanceState(node: ModuleDeclaration, visited?: Map<number, ModuleInstanceState | undefined>): ModuleInstanceState {
     if (node.body && !node.body.parent) {
         // getModuleInstanceStateForAliasTarget needs to walk up the parent chain, so parent pointers must be set on this tree already
         setParent(node.body, node);
@@ -96,7 +96,7 @@ function getModuleInstanceStateCached(node: Node, visited = new Map<number, Modu
     return result;
 }
 
-function getModuleInstanceStateWorker(node: Node, visited: ESMap<number, ModuleInstanceState | undefined>): ModuleInstanceState {
+function getModuleInstanceStateWorker(node: Node, visited: Map<number, ModuleInstanceState | undefined>): ModuleInstanceState {
     // A module is uninstantiated if it contains only
     switch (node.kind) {
         // 1. interface declarations, type alias declarations
@@ -168,7 +168,7 @@ function getModuleInstanceStateWorker(node: Node, visited: ESMap<number, ModuleI
     return ModuleInstanceState.Instantiated;
 }
 
-function getModuleInstanceStateForAliasTarget(specifier: ExportSpecifier, visited: ESMap<number, ModuleInstanceState | undefined>) {
+function getModuleInstanceStateForAliasTarget(specifier: ExportSpecifier, visited: Map<number, ModuleInstanceState | undefined>) {
     const name = specifier.propertyName || specifier.name;
     let p: Node | undefined = specifier.parent;
     while (p) {

src/compiler/builder.ts

@@ -7,12 +7,12 @@ import {
     createBuildInfo, createGetCanonicalFileName, createProgram, CustomTransformers, Debug, Diagnostic,
     DiagnosticCategory, DiagnosticMessageChain, DiagnosticRelatedInformation, DiagnosticWithLocation,
     EmitAndSemanticDiagnosticsBuilderProgram, EmitOnly, EmitResult, emitSkippedWithNoDiagnostics, emptyArray,
-    ensurePathIsNonModuleName, ESMap, filterSemanticDiagnostics, forEach, forEachEntry, forEachKey, generateDjb2Hash,
+    ensurePathIsNonModuleName, filterSemanticDiagnostics, forEach, forEachEntry, forEachKey, generateDjb2Hash,
     GetCanonicalFileName, getDirectoryPath, getEmitDeclarations, getNormalizedAbsolutePath, getOptionsNameMap,
     getOwnKeys, getRelativePathFromDirectory, getTsBuildInfoEmitOutputFilePath, handleNoEmitOptions, isArray,
-    isDeclarationFileName, isJsonSourceFile, isNumber, isString, map, Map, mapDefined, maybeBind, noop, notImplemented,
-    outFile, Path, Program, ProjectReference, ReadBuildProgramHost, ReadonlyCollection, ReadonlyESMap, ReadonlySet,
-    returnFalse, returnUndefined, SemanticDiagnosticsBuilderProgram, Set, skipTypeChecking, some, SourceFile,
+    isDeclarationFileName, isJsonSourceFile, isNumber, isString, map, mapDefined, maybeBind, noop, notImplemented,
+    outFile, Path, Program, ProjectReference, ReadBuildProgramHost, ReadonlyCollection,
+    returnFalse, returnUndefined, SemanticDiagnosticsBuilderProgram, skipTypeChecking, some, SourceFile,
     sourceFileMayBeEmitted, SourceMapEmitResult, toPath, tryAddToSet, WriteFileCallback, WriteFileCallbackData,
 } from "./_namespaces/ts";
 
@@ -51,7 +51,7 @@ export interface ReusableBuilderProgramState extends BuilderState {
     /**
      * Cache of bind and check diagnostics for files with their Path being the key
      */
-    semanticDiagnosticsPerFile?: ESMap<Path, readonly ReusableDiagnostic[] | readonly Diagnostic[]> | undefined;
+    semanticDiagnosticsPerFile?: Map<Path, readonly ReusableDiagnostic[] | readonly Diagnostic[]> | undefined;
     /**
      * The map has key by source file's path that has been changed
      */
@@ -67,7 +67,7 @@ export interface ReusableBuilderProgramState extends BuilderState {
     /**
      * Files pending to be emitted
      */
-    affectedFilesPendingEmit?: ReadonlyESMap<Path, BuilderFileEmit>;
+    affectedFilesPendingEmit?: ReadonlyMap<Path, BuilderFileEmit>;
     /**
      * emitKind pending for a program with --out
      */
@@ -79,7 +79,7 @@ export interface ReusableBuilderProgramState extends BuilderState {
     /**
      * Hash of d.ts emitted for the file, use to track when emit of d.ts changes
      */
-    emitSignatures?: ESMap<Path, EmitSignature>;
+    emitSignatures?: Map<Path, EmitSignature>;
     /**
      * Hash of d.ts emit with --out
      */
@@ -118,7 +118,7 @@ export interface BuilderProgramState extends BuilderState, ReusableBuilderProgra
     /**
      * Cache of bind and check diagnostics for files with their Path being the key
      */
-    semanticDiagnosticsPerFile: ESMap<Path, readonly Diagnostic[]> | undefined;
+    semanticDiagnosticsPerFile: Map<Path, readonly Diagnostic[]> | undefined;
     /**
      * The map has key by source file's path that has been changed
      */
@@ -154,15 +154,15 @@ export interface BuilderProgramState extends BuilderState, ReusableBuilderProgra
     /**
      * Files pending to be emitted
      */
-    affectedFilesPendingEmit?: ESMap<Path, BuilderFileEmit>;
+    affectedFilesPendingEmit?: Map<Path, BuilderFileEmit>;
     /**
      * true if build info is emitted
      */
     buildInfoEmitPending: boolean;
     /**
      * Already seen emitted files
      */
-    seenEmittedFiles: ESMap<Path, BuilderFileEmit> | undefined;
+    seenEmittedFiles: Map<Path, BuilderFileEmit> | undefined;
     /** Stores list of files that change signature during emit - test only */
     filesChangingSignature?: Set<Path>;
 }
@@ -954,7 +954,7 @@ function getBuildInfo(state: BuilderProgramState, getCanonicalFileName: GetCanon
     }
 
     let fileIdsList: (readonly ProgramBuildInfoFileId[])[] | undefined;
-    let fileNamesToFileIdListId: ESMap<string, ProgramBuildInfoFileIdListId> | undefined;
+    let fileNamesToFileIdListId: Map<string, ProgramBuildInfoFileIdListId> | undefined;
     let emitSignatures: ProgramBuildInfoEmitSignature[] | undefined;
     const fileInfos = arrayFrom(state.fileInfos.entries(), ([key, value]): ProgramMultiFileEmitBuildInfoFileInfo => {
         // Ensure fileId
@@ -1733,7 +1733,7 @@ export function getBuildInfoFileVersionMap(
     program: ProgramBuildInfo,
     buildInfoPath: string,
     host: Pick<ReadBuildProgramHost, "useCaseSensitiveFileNames" | "getCurrentDirectory">
-): ESMap<Path, string> {
+): Map<Path, string> {
     const buildInfoDirectory = getDirectoryPath(getNormalizedAbsolutePath(buildInfoPath, host.getCurrentDirectory()));
     const getCanonicalFileName = createGetCanonicalFileName(host.useCaseSensitiveFileNames());
     const fileInfos = new Map<Path, string>();

src/compiler/builderState.ts

@@ -1,9 +1,9 @@
 import {
     arrayFrom, CancellationToken, computeSignatureWithDiagnostics, CustomTransformers, Debug, EmitOutput, emptyArray,
-    ESMap, ExportedModulesFromDeclarationEmit, GetCanonicalFileName, getDirectoryPath, getSourceFileOfNode,
+    ExportedModulesFromDeclarationEmit, GetCanonicalFileName, getDirectoryPath, getSourceFileOfNode,
     isDeclarationFileName, isExternalOrCommonJsModule, isGlobalScopeAugmentation, isJsonSourceFile,
-    isModuleWithStringLiteralName, isStringLiteral, Iterator, Map, mapDefined, mapDefinedIterator, ModuleDeclaration,
-    ModuleKind, outFile, OutputFile, Path, Program, ReadonlySet, Set, some, SourceFile, StringLiteralLike, Symbol,
+    isModuleWithStringLiteralName, isStringLiteral, mapDefined, mapDefinedIterator, ModuleDeclaration,
+    ModuleKind, outFile, OutputFile, Path, Program, some, SourceFile, StringLiteralLike, Symbol,
     toPath, TypeChecker,
 } from "./_namespaces/ts";
 
@@ -23,7 +23,7 @@ export interface BuilderState {
     /**
      * Information of the file eg. its version, signature etc
      */
-    fileInfos: ESMap<Path, BuilderState.FileInfo>;
+    fileInfos: Map<Path, BuilderState.FileInfo>;
     /**
      * Contains the map of ReferencedSet=Referenced files of the file if module emit is enabled
      * Otherwise undefined
@@ -52,11 +52,11 @@ export interface BuilderState {
     /**
      * Stores signatures before before the update till affected file is commited
      */
-    oldSignatures?: ESMap<Path, string | false>;
+    oldSignatures?: Map<Path, string | false>;
     /**
      * Stores exportedModulesMap before the update till affected file is commited
      */
-    oldExportedModulesMap?: ESMap<Path, ReadonlySet<Path> | false>;
+    oldExportedModulesMap?: Map<Path, ReadonlySet<Path> | false>;
     /**
      * Cache of all files excluding default library file for the current program
      */
@@ -90,7 +90,7 @@ export namespace BuilderState {
     }
 
     export function createManyToManyPathMap(): ManyToManyPathMap {
-        function create(forward: ESMap<Path, ReadonlySet<Path>>, reverse: ESMap<Path, Set<Path>>, deleted: Set<Path> | undefined): ManyToManyPathMap {
+        function create(forward: Map<Path, ReadonlySet<Path>>, reverse: Map<Path, Set<Path>>, deleted: Set<Path> | undefined): ManyToManyPathMap {
             const map: ManyToManyPathMap = {
                 getKeys: v => reverse.get(v),
                 getValues: k => forward.get(k),
@@ -136,7 +136,7 @@ export namespace BuilderState {
         return create(new Map<Path, Set<Path>>(), new Map<Path, Set<Path>>(), /*deleted*/ undefined);
     }
 
-    function addToMultimap<K, V>(map: ESMap<K, Set<V>>, k: K, v: V): void {
+    function addToMultimap<K, V>(map: Map<K, Set<V>>, k: K, v: V): void {
         let set = map.get(k);
         if (!set) {
             set = new Set<V>();
@@ -145,7 +145,7 @@ export namespace BuilderState {
         set.add(v);
     }
 
-    function deleteFromMultimap<K, V>(map: ESMap<K, Set<V>>, k: K, v: V): boolean {
+    function deleteFromMultimap<K, V>(map: Map<K, Set<V>>, k: K, v: V): boolean {
         const set = map.get(k);
 
         if (set?.delete(v)) {