diff --git a/src/compiler/commandLineParser.ts b/src/compiler/commandLineParser.ts
index b790ed08fbe08..b336376d6590e 100644
--- a/src/compiler/commandLineParser.ts
+++ b/src/compiler/commandLineParser.ts
@@ -236,6 +236,7 @@ const libEntries: [string, string][] = [
["esnext.object", "lib.esnext.object.d.ts"],
["esnext.array", "lib.esnext.array.d.ts"],
["esnext.regexp", "lib.esnext.regexp.d.ts"],
+ ["esnext.string", "lib.esnext.string.d.ts"],
["decorators", "lib.decorators.d.ts"],
["decorators.legacy", "lib.decorators.legacy.d.ts"],
];
diff --git a/src/compiler/utilities.ts b/src/compiler/utilities.ts
index 4bbd3a80951b6..3ff2acbd5590e 100644
--- a/src/compiler/utilities.ts
+++ b/src/compiler/utilities.ts
@@ -1507,6 +1507,10 @@ export const getScriptTargetFeatures = /* @__PURE__ */ memoize((): ScriptTargetF
es2022: [
"at",
],
+ esnext: [
+ "isWellFormed",
+ "toWellFormed",
+ ],
})),
StringConstructor: new Map(Object.entries({
es2015: [
diff --git a/src/lib/esnext.d.ts b/src/lib/esnext.d.ts
index 9e601b60a27c2..94aedd4480ccd 100644
--- a/src/lib/esnext.d.ts
+++ b/src/lib/esnext.d.ts
@@ -7,3 +7,4 @@
///
///
///
+///
diff --git a/src/lib/esnext.string.d.ts b/src/lib/esnext.string.d.ts
new file mode 100644
index 0000000000000..3018908e46189
--- /dev/null
+++ b/src/lib/esnext.string.d.ts
@@ -0,0 +1,11 @@
+interface String {
+ /**
+ * Returns true if all leading surrogates and trailing surrogates appear paired and in order.
+ */
+ isWellFormed(): boolean;
+
+ /**
+ * Returns a string where all lone or out-of-order surrogates have been replaced by the Unicode replacement character (U+FFFD).
+ */
+ toWellFormed(): string;
+}
diff --git a/src/lib/libs.json b/src/lib/libs.json
index d97a25e09679f..9477c3d78edcd 100644
--- a/src/lib/libs.json
+++ b/src/lib/libs.json
@@ -79,6 +79,7 @@
"esnext.collection",
"esnext.array",
"esnext.regexp",
+ "esnext.string",
"decorators",
"decorators.legacy",
// Default libraries
diff --git a/tests/baselines/reference/bundlerDirectoryModule(moduleresolution=bundler).trace.json b/tests/baselines/reference/bundlerDirectoryModule(moduleresolution=bundler).trace.json
index 6a9e7816773e6..89054fb3514a3 100644
--- a/tests/baselines/reference/bundlerDirectoryModule(moduleresolution=bundler).trace.json
+++ b/tests/baselines/reference/bundlerDirectoryModule(moduleresolution=bundler).trace.json
@@ -1074,6 +1074,21 @@
"======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/string' from '/.src/__lib_node_modules_lookup_lib.esnext.string.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/bundlerDirectoryModule(moduleresolution=nodenext).trace.json b/tests/baselines/reference/bundlerDirectoryModule(moduleresolution=nodenext).trace.json
index d20de95869c4e..1f3f12c611252 100644
--- a/tests/baselines/reference/bundlerDirectoryModule(moduleresolution=nodenext).trace.json
+++ b/tests/baselines/reference/bundlerDirectoryModule(moduleresolution=nodenext).trace.json
@@ -1074,6 +1074,21 @@
"======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/string' from '/.src/__lib_node_modules_lookup_lib.esnext.string.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/dependentDestructuredVariablesFromNestedPatterns.symbols b/tests/baselines/reference/dependentDestructuredVariablesFromNestedPatterns.symbols
index 90a5600ec5d14..246d5db242e63 100644
--- a/tests/baselines/reference/dependentDestructuredVariablesFromNestedPatterns.symbols
+++ b/tests/baselines/reference/dependentDestructuredVariablesFromNestedPatterns.symbols
@@ -70,7 +70,7 @@ async function myAllSettled(fn: () => T) {
: [undefined, new Error(String(result.reason))],
>undefined : Symbol(undefined)
>Error : Symbol(Error, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2022.error.d.ts, --, --))
->String : Symbol(String, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --) ... and 6 more)
+>String : Symbol(String, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --) ... and 7 more)
>result.reason : Symbol(PromiseRejectedResult.reason, Decl(lib.es2020.promise.d.ts, --, --))
>result : Symbol(result, Decl(dependentDestructuredVariablesFromNestedPatterns.ts, 21, 23))
>reason : Symbol(PromiseRejectedResult.reason, Decl(lib.es2020.promise.d.ts, --, --))
diff --git a/tests/baselines/reference/modulePreserve2.trace.json b/tests/baselines/reference/modulePreserve2.trace.json
index 406e188dcf219..7bbbe7e5dc0a7 100644
--- a/tests/baselines/reference/modulePreserve2.trace.json
+++ b/tests/baselines/reference/modulePreserve2.trace.json
@@ -1019,6 +1019,20 @@
"======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/string' from '/.src/__lib_node_modules_lookup_lib.esnext.string.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Directory '/node_modules/@types' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/modulePreserve3.trace.json b/tests/baselines/reference/modulePreserve3.trace.json
index 26a3f3176c907..b0561a05d4f65 100644
--- a/tests/baselines/reference/modulePreserve3.trace.json
+++ b/tests/baselines/reference/modulePreserve3.trace.json
@@ -951,6 +951,19 @@
"======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/string' from '/.src/__lib_node_modules_lookup_lib.esnext.string.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/nodeModulesExportsBlocksTypesVersions(module=nodenext).trace.json b/tests/baselines/reference/nodeModulesExportsBlocksTypesVersions(module=nodenext).trace.json
index 6bd7d40222f9b..f4021f2e67747 100644
--- a/tests/baselines/reference/nodeModulesExportsBlocksTypesVersions(module=nodenext).trace.json
+++ b/tests/baselines/reference/nodeModulesExportsBlocksTypesVersions(module=nodenext).trace.json
@@ -1189,6 +1189,20 @@
"======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/string' from '/.src/__lib_node_modules_lookup_lib.esnext.string.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Directory '/node_modules/@types' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/nodeModulesPackageImports(module=nodenext).trace.json b/tests/baselines/reference/nodeModulesPackageImports(module=nodenext).trace.json
index 0faf9ac8e2d24..928b94be2e2c7 100644
--- a/tests/baselines/reference/nodeModulesPackageImports(module=nodenext).trace.json
+++ b/tests/baselines/reference/nodeModulesPackageImports(module=nodenext).trace.json
@@ -1133,6 +1133,21 @@
"======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/string' from '/.src/__lib_node_modules_lookup_lib.esnext.string.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/nodeModulesPackagePatternExportsTrailers(module=nodenext).trace.json b/tests/baselines/reference/nodeModulesPackagePatternExportsTrailers(module=nodenext).trace.json
index 0ef4d5da75fb7..24d3f4ba59a60 100644
--- a/tests/baselines/reference/nodeModulesPackagePatternExportsTrailers(module=nodenext).trace.json
+++ b/tests/baselines/reference/nodeModulesPackagePatternExportsTrailers(module=nodenext).trace.json
@@ -1170,6 +1170,20 @@
"======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/string' from '/.src/__lib_node_modules_lookup_lib.esnext.string.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules/@types' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/reactJsxReactResolvedNodeNext.trace.json b/tests/baselines/reference/reactJsxReactResolvedNodeNext.trace.json
index d19286646e834..e09f66f8ac9aa 100644
--- a/tests/baselines/reference/reactJsxReactResolvedNodeNext.trace.json
+++ b/tests/baselines/reference/reactJsxReactResolvedNodeNext.trace.json
@@ -964,6 +964,19 @@
"======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/string' from '/.src/__lib_node_modules_lookup_lib.esnext.string.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/reactJsxReactResolvedNodeNextEsm.trace.json b/tests/baselines/reference/reactJsxReactResolvedNodeNextEsm.trace.json
index 1849087a77565..371f19d242f39 100644
--- a/tests/baselines/reference/reactJsxReactResolvedNodeNextEsm.trace.json
+++ b/tests/baselines/reference/reactJsxReactResolvedNodeNextEsm.trace.json
@@ -964,6 +964,19 @@
"======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/string' from '/.src/__lib_node_modules_lookup_lib.esnext.string.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/tsc/runWithoutArgs/does-not-add-color-when-NO_COLOR-is-set.js b/tests/baselines/reference/tsc/runWithoutArgs/does-not-add-color-when-NO_COLOR-is-set.js
index 97c9057dd03b3..d28cc6ec21030 100644
--- a/tests/baselines/reference/tsc/runWithoutArgs/does-not-add-color-when-NO_COLOR-is-set.js
+++ b/tests/baselines/reference/tsc/runWithoutArgs/does-not-add-color-when-NO_COLOR-is-set.js
@@ -111,7 +111,7 @@ default: undefined
--lib
Specify a set of bundled library declaration files that describe the target runtime environment.
-one or more: es5, es6/es2015, es7/es2016, es2017, es2018, es2019, es2020, es2021, es2022, es2023, esnext, dom, dom.iterable, dom.asynciterable, webworker, webworker.importscripts, webworker.iterable, webworker.asynciterable, scripthost, es2015.core, es2015.collection, es2015.generator, es2015.iterable, es2015.promise, es2015.proxy, es2015.reflect, es2015.symbol, es2015.symbol.wellknown, es2016.array.include, es2016.intl, es2017.date, es2017.object, es2017.sharedmemory, es2017.string, es2017.intl, es2017.typedarrays, es2018.asyncgenerator, es2018.asynciterable/esnext.asynciterable, es2018.intl, es2018.promise, es2018.regexp, es2019.array, es2019.object, es2019.string, es2019.symbol/esnext.symbol, es2019.intl, es2020.bigint/esnext.bigint, es2020.date, es2020.promise, es2020.sharedmemory, es2020.string, es2020.symbol.wellknown, es2020.intl, es2020.number, es2021.promise, es2021.string, es2021.weakref/esnext.weakref, es2021.intl, es2022.array, es2022.error, es2022.intl, es2022.object, es2022.sharedmemory, es2022.string/esnext.string, es2022.regexp, es2023.array, es2023.collection, es2023.intl, esnext.array, esnext.collection, esnext.intl, esnext.disposable, esnext.promise, esnext.decorators, esnext.object, esnext.regexp, decorators, decorators.legacy
+one or more: es5, es6/es2015, es7/es2016, es2017, es2018, es2019, es2020, es2021, es2022, es2023, esnext, dom, dom.iterable, dom.asynciterable, webworker, webworker.importscripts, webworker.iterable, webworker.asynciterable, scripthost, es2015.core, es2015.collection, es2015.generator, es2015.iterable, es2015.promise, es2015.proxy, es2015.reflect, es2015.symbol, es2015.symbol.wellknown, es2016.array.include, es2016.intl, es2017.date, es2017.object, es2017.sharedmemory, es2017.string, es2017.intl, es2017.typedarrays, es2018.asyncgenerator, es2018.asynciterable/esnext.asynciterable, es2018.intl, es2018.promise, es2018.regexp, es2019.array, es2019.object, es2019.string, es2019.symbol/esnext.symbol, es2019.intl, es2020.bigint/esnext.bigint, es2020.date, es2020.promise, es2020.sharedmemory, es2020.string, es2020.symbol.wellknown, es2020.intl, es2020.number, es2021.promise, es2021.string, es2021.weakref/esnext.weakref, es2021.intl, es2022.array, es2022.error, es2022.intl, es2022.object, es2022.sharedmemory, es2022.string, es2022.regexp, es2023.array, es2023.collection, es2023.intl, esnext.array, esnext.collection, esnext.intl, esnext.disposable, esnext.string, esnext.promise, esnext.decorators, esnext.object, esnext.regexp, decorators, decorators.legacy
default: undefined
--allowJs
diff --git a/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped-when-host-can't-provide-terminal-width.js b/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped-when-host-can't-provide-terminal-width.js
index 8191f56bbf51a..d52e6ac3d9037 100644
--- a/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped-when-host-can't-provide-terminal-width.js
+++ b/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped-when-host-can't-provide-terminal-width.js
@@ -111,7 +111,7 @@ default: undefined
[94m--lib[39m
Specify a set of bundled library declaration files that describe the target runtime environment.
-one or more: es5, es6/es2015, es7/es2016, es2017, es2018, es2019, es2020, es2021, es2022, es2023, esnext, dom, dom.iterable, dom.asynciterable, webworker, webworker.importscripts, webworker.iterable, webworker.asynciterable, scripthost, es2015.core, es2015.collection, es2015.generator, es2015.iterable, es2015.promise, es2015.proxy, es2015.reflect, es2015.symbol, es2015.symbol.wellknown, es2016.array.include, es2016.intl, es2017.date, es2017.object, es2017.sharedmemory, es2017.string, es2017.intl, es2017.typedarrays, es2018.asyncgenerator, es2018.asynciterable/esnext.asynciterable, es2018.intl, es2018.promise, es2018.regexp, es2019.array, es2019.object, es2019.string, es2019.symbol/esnext.symbol, es2019.intl, es2020.bigint/esnext.bigint, es2020.date, es2020.promise, es2020.sharedmemory, es2020.string, es2020.symbol.wellknown, es2020.intl, es2020.number, es2021.promise, es2021.string, es2021.weakref/esnext.weakref, es2021.intl, es2022.array, es2022.error, es2022.intl, es2022.object, es2022.sharedmemory, es2022.string/esnext.string, es2022.regexp, es2023.array, es2023.collection, es2023.intl, esnext.array, esnext.collection, esnext.intl, esnext.disposable, esnext.promise, esnext.decorators, esnext.object, esnext.regexp, decorators, decorators.legacy
+one or more: es5, es6/es2015, es7/es2016, es2017, es2018, es2019, es2020, es2021, es2022, es2023, esnext, dom, dom.iterable, dom.asynciterable, webworker, webworker.importscripts, webworker.iterable, webworker.asynciterable, scripthost, es2015.core, es2015.collection, es2015.generator, es2015.iterable, es2015.promise, es2015.proxy, es2015.reflect, es2015.symbol, es2015.symbol.wellknown, es2016.array.include, es2016.intl, es2017.date, es2017.object, es2017.sharedmemory, es2017.string, es2017.intl, es2017.typedarrays, es2018.asyncgenerator, es2018.asynciterable/esnext.asynciterable, es2018.intl, es2018.promise, es2018.regexp, es2019.array, es2019.object, es2019.string, es2019.symbol/esnext.symbol, es2019.intl, es2020.bigint/esnext.bigint, es2020.date, es2020.promise, es2020.sharedmemory, es2020.string, es2020.symbol.wellknown, es2020.intl, es2020.number, es2021.promise, es2021.string, es2021.weakref/esnext.weakref, es2021.intl, es2022.array, es2022.error, es2022.intl, es2022.object, es2022.sharedmemory, es2022.string, es2022.regexp, es2023.array, es2023.collection, es2023.intl, esnext.array, esnext.collection, esnext.intl, esnext.disposable, esnext.string, esnext.promise, esnext.decorators, esnext.object, esnext.regexp, decorators, decorators.legacy
default: undefined
[94m--allowJs[39m
diff --git a/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped.js b/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped.js
index 8191f56bbf51a..d52e6ac3d9037 100644
--- a/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped.js
+++ b/tests/baselines/reference/tsc/runWithoutArgs/show-help-with-ExitStatus.DiagnosticsPresent_OutputsSkipped.js
@@ -111,7 +111,7 @@ default: undefined
[94m--lib[39m
Specify a set of bundled library declaration files that describe the target runtime environment.
-one or more: es5, es6/es2015, es7/es2016, es2017, es2018, es2019, es2020, es2021, es2022, es2023, esnext, dom, dom.iterable, dom.asynciterable, webworker, webworker.importscripts, webworker.iterable, webworker.asynciterable, scripthost, es2015.core, es2015.collection, es2015.generator, es2015.iterable, es2015.promise, es2015.proxy, es2015.reflect, es2015.symbol, es2015.symbol.wellknown, es2016.array.include, es2016.intl, es2017.date, es2017.object, es2017.sharedmemory, es2017.string, es2017.intl, es2017.typedarrays, es2018.asyncgenerator, es2018.asynciterable/esnext.asynciterable, es2018.intl, es2018.promise, es2018.regexp, es2019.array, es2019.object, es2019.string, es2019.symbol/esnext.symbol, es2019.intl, es2020.bigint/esnext.bigint, es2020.date, es2020.promise, es2020.sharedmemory, es2020.string, es2020.symbol.wellknown, es2020.intl, es2020.number, es2021.promise, es2021.string, es2021.weakref/esnext.weakref, es2021.intl, es2022.array, es2022.error, es2022.intl, es2022.object, es2022.sharedmemory, es2022.string/esnext.string, es2022.regexp, es2023.array, es2023.collection, es2023.intl, esnext.array, esnext.collection, esnext.intl, esnext.disposable, esnext.promise, esnext.decorators, esnext.object, esnext.regexp, decorators, decorators.legacy
+one or more: es5, es6/es2015, es7/es2016, es2017, es2018, es2019, es2020, es2021, es2022, es2023, esnext, dom, dom.iterable, dom.asynciterable, webworker, webworker.importscripts, webworker.iterable, webworker.asynciterable, scripthost, es2015.core, es2015.collection, es2015.generator, es2015.iterable, es2015.promise, es2015.proxy, es2015.reflect, es2015.symbol, es2015.symbol.wellknown, es2016.array.include, es2016.intl, es2017.date, es2017.object, es2017.sharedmemory, es2017.string, es2017.intl, es2017.typedarrays, es2018.asyncgenerator, es2018.asynciterable/esnext.asynciterable, es2018.intl, es2018.promise, es2018.regexp, es2019.array, es2019.object, es2019.string, es2019.symbol/esnext.symbol, es2019.intl, es2020.bigint/esnext.bigint, es2020.date, es2020.promise, es2020.sharedmemory, es2020.string, es2020.symbol.wellknown, es2020.intl, es2020.number, es2021.promise, es2021.string, es2021.weakref/esnext.weakref, es2021.intl, es2022.array, es2022.error, es2022.intl, es2022.object, es2022.sharedmemory, es2022.string, es2022.regexp, es2023.array, es2023.collection, es2023.intl, esnext.array, esnext.collection, esnext.intl, esnext.disposable, esnext.string, esnext.promise, esnext.decorators, esnext.object, esnext.regexp, decorators, decorators.legacy
default: undefined
[94m--allowJs[39m
diff --git a/tests/baselines/reference/typeGuardConstructorNarrowAny.symbols b/tests/baselines/reference/typeGuardConstructorNarrowAny.symbols
index fc87ef85dfbd2..4f8fb55c63d1e 100644
--- a/tests/baselines/reference/typeGuardConstructorNarrowAny.symbols
+++ b/tests/baselines/reference/typeGuardConstructorNarrowAny.symbols
@@ -7,7 +7,7 @@ let var1: any;
if (var1.constructor === String) {
>var1 : Symbol(var1, Decl(typeGuardConstructorNarrowAny.ts, 1, 3))
->String : Symbol(String, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --) ... and 6 more)
+>String : Symbol(String, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --) ... and 7 more)
var1; // String
>var1 : Symbol(var1, Decl(typeGuardConstructorNarrowAny.ts, 1, 3))
diff --git a/tests/baselines/reference/typeGuardConstructorPrimitiveTypes.symbols b/tests/baselines/reference/typeGuardConstructorPrimitiveTypes.symbols
index d3f4a65bfcf54..b1410f89508bf 100644
--- a/tests/baselines/reference/typeGuardConstructorPrimitiveTypes.symbols
+++ b/tests/baselines/reference/typeGuardConstructorPrimitiveTypes.symbols
@@ -9,7 +9,7 @@ if (var1.constructor === String) {
>var1.constructor : Symbol(Object.constructor, Decl(lib.es5.d.ts, --, --))
>var1 : Symbol(var1, Decl(typeGuardConstructorPrimitiveTypes.ts, 1, 3))
>constructor : Symbol(Object.constructor, Decl(lib.es5.d.ts, --, --))
->String : Symbol(String, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --) ... and 6 more)
+>String : Symbol(String, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --) ... and 7 more)
var1; // string
>var1 : Symbol(var1, Decl(typeGuardConstructorPrimitiveTypes.ts, 1, 3))
@@ -63,7 +63,7 @@ if (var1.constructor === BigInt) {
// Narrow a union of primitive object types
let var2: String | Number | Boolean | Symbol | BigInt;
>var2 : Symbol(var2, Decl(typeGuardConstructorPrimitiveTypes.ts, 22, 3))
->String : Symbol(String, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --) ... and 6 more)
+>String : Symbol(String, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --) ... and 7 more)
>Number : Symbol(Number, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2020.number.d.ts, --, --))
>Boolean : Symbol(Boolean, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --))
>Symbol : Symbol(Symbol, Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.symbol.d.ts, --, --), Decl(lib.es2015.symbol.wellknown.d.ts, --, --), Decl(lib.es2019.symbol.d.ts, --, --))
@@ -73,7 +73,7 @@ if (var2.constructor === String) {
>var2.constructor : Symbol(Object.constructor, Decl(lib.es5.d.ts, --, --))
>var2 : Symbol(var2, Decl(typeGuardConstructorPrimitiveTypes.ts, 22, 3))
>constructor : Symbol(Object.constructor, Decl(lib.es5.d.ts, --, --))
->String : Symbol(String, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --) ... and 6 more)
+>String : Symbol(String, Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es5.d.ts, --, --), Decl(lib.es2015.core.d.ts, --, --), Decl(lib.es2015.iterable.d.ts, --, --) ... and 7 more)
var2; // String
>var2 : Symbol(var2, Decl(typeGuardConstructorPrimitiveTypes.ts, 22, 3))
diff --git a/tests/baselines/reference/typesVersions.ambientModules.trace.json b/tests/baselines/reference/typesVersions.ambientModules.trace.json
index d1db5bcce72c1..656887a06e765 100644
--- a/tests/baselines/reference/typesVersions.ambientModules.trace.json
+++ b/tests/baselines/reference/typesVersions.ambientModules.trace.json
@@ -1058,6 +1058,20 @@
"======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/string' from '/.src/__lib_node_modules_lookup_lib.esnext.string.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules/@types' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/typesVersions.emptyTypes.trace.json b/tests/baselines/reference/typesVersions.emptyTypes.trace.json
index 329da7de27ea8..bcf740e65afed 100644
--- a/tests/baselines/reference/typesVersions.emptyTypes.trace.json
+++ b/tests/baselines/reference/typesVersions.emptyTypes.trace.json
@@ -1076,6 +1076,21 @@
"======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/string' from '/.src/__lib_node_modules_lookup_lib.esnext.string.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/typesVersions.justIndex.trace.json b/tests/baselines/reference/typesVersions.justIndex.trace.json
index 107cb19c7d5c9..010cf16aaea89 100644
--- a/tests/baselines/reference/typesVersions.justIndex.trace.json
+++ b/tests/baselines/reference/typesVersions.justIndex.trace.json
@@ -1076,6 +1076,21 @@
"======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/string' from '/.src/__lib_node_modules_lookup_lib.esnext.string.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/.src/node_modules' does not exist, skipping all lookups in it.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/typesVersions.multiFile.trace.json b/tests/baselines/reference/typesVersions.multiFile.trace.json
index 42f5b7cbf0fc3..cb2eb58717b60 100644
--- a/tests/baselines/reference/typesVersions.multiFile.trace.json
+++ b/tests/baselines/reference/typesVersions.multiFile.trace.json
@@ -1021,6 +1021,20 @@
"======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/string' from '/.src/__lib_node_modules_lookup_lib.esnext.string.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules/@types' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/typesVersionsDeclarationEmit.ambient.trace.json b/tests/baselines/reference/typesVersionsDeclarationEmit.ambient.trace.json
index d1db5bcce72c1..656887a06e765 100644
--- a/tests/baselines/reference/typesVersionsDeclarationEmit.ambient.trace.json
+++ b/tests/baselines/reference/typesVersionsDeclarationEmit.ambient.trace.json
@@ -1058,6 +1058,20 @@
"======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/string' from '/.src/__lib_node_modules_lookup_lib.esnext.string.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules/@types' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/typesVersionsDeclarationEmit.multiFile.trace.json b/tests/baselines/reference/typesVersionsDeclarationEmit.multiFile.trace.json
index 42f5b7cbf0fc3..cb2eb58717b60 100644
--- a/tests/baselines/reference/typesVersionsDeclarationEmit.multiFile.trace.json
+++ b/tests/baselines/reference/typesVersionsDeclarationEmit.multiFile.trace.json
@@ -1021,6 +1021,20 @@
"======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/string' from '/.src/__lib_node_modules_lookup_lib.esnext.string.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules/@types' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToSelf.trace.json b/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToSelf.trace.json
index 774007ccd8a66..af2f5c534cca9 100644
--- a/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToSelf.trace.json
+++ b/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToSelf.trace.json
@@ -1044,6 +1044,20 @@
"======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/string' from '/.src/__lib_node_modules_lookup_lib.esnext.string.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules/@types' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",
diff --git a/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToUnmapped.trace.json b/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToUnmapped.trace.json
index 74258268ae864..196f91896e47b 100644
--- a/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToUnmapped.trace.json
+++ b/tests/baselines/reference/typesVersionsDeclarationEmit.multiFileBackReferenceToUnmapped.trace.json
@@ -1026,6 +1026,20 @@
"======== Module name '@typescript/lib-esnext/regexp' was not resolved. ========",
"File '/.ts/package.json' does not exist according to earlier cached lookups.",
"File '/package.json' does not exist according to earlier cached lookups.",
+ "======== Resolving module '@typescript/lib-esnext/string' from '/.src/__lib_node_modules_lookup_lib.esnext.string.d.ts__.ts'. ========",
+ "Explicitly specified module resolution kind: 'Node10'.",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: TypeScript, Declaration.",
+ "Searching all ancestor node_modules directories for preferred extensions: TypeScript, Declaration.",
+ "Directory '/.src/node_modules/@types' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "Scoped package detected, looking in 'typescript__lib-esnext/string'",
+ "Loading module '@typescript/lib-esnext/string' from 'node_modules' folder, target file types: JavaScript.",
+ "Searching all ancestor node_modules directories for fallback extensions: JavaScript.",
+ "Directory '/node_modules' does not exist, skipping all lookups in it.",
+ "======== Module name '@typescript/lib-esnext/string' was not resolved. ========",
+ "File '/.ts/package.json' does not exist according to earlier cached lookups.",
+ "File '/package.json' does not exist according to earlier cached lookups.",
"======== Resolving module '@typescript/lib-dom' from '/.src/__lib_node_modules_lookup_lib.dom.d.ts__.ts'. ========",
"Explicitly specified module resolution kind: 'Node10'.",
"Loading module '@typescript/lib-dom' from 'node_modules' folder, target file types: TypeScript, Declaration.",