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feat(51000): add ignoreDeprecations option
1 parent 5e3fa9b commit e4ecc3f

25 files changed

+382
-7
lines changed

‎src/compiler/commandLineParser.ts

Lines changed: 10 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -1352,7 +1352,16 @@ namespace ts {
13521352
description: Diagnostics.Control_what_method_is_used_to_detect_module_format_JS_files,
13531353
category: Diagnostics.Language_and_Environment,
13541354
defaultValueDescription: Diagnostics.auto_Colon_Treat_files_with_imports_exports_import_meta_jsx_with_jsx_Colon_react_jsx_or_esm_format_with_module_Colon_node16_as_modules,
1355-
}
1355+
},
1356+
{
1357+
name: "ignoreDeprecations",
1358+
type: new Map(getEntries({
1359+
[DeprecationPhaseToVersionMap[DeprecationPhase.Phase1]]: DeprecationPhase.Phase1,
1360+
[DeprecationPhaseToVersionMap[DeprecationPhase.Phase2]]: DeprecationPhase.Phase2,
1361+
[DeprecationPhaseToVersionMap[DeprecationPhase.Phase3]]: DeprecationPhase.Phase3,
1362+
})),
1363+
defaultValueDescription: undefined,
1364+
},
13561365
];
13571366

13581367
/* @internal */

‎src/compiler/diagnosticMessages.json

Lines changed: 12 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -4221,6 +4221,18 @@
42214221
"category": "Error",
42224222
"code": 5095
42234223
},
4224+
"Flag '{0}' is deprecated and will stop functioning in TypeScript {1}. Specify 'ignoreDeprecations: \"{2}\"' to silence this error.": {
4225+
"category": "Error",
4226+
"code": 5096
4227+
},
4228+
"Flag '{0}' is deprecated, please remove it from your configuration.": {
4229+
"category": "Error",
4230+
"code": 5097
4231+
},
4232+
"Invalid value for '--ignoreDeprecations'.": {
4233+
"category": "Error",
4234+
"code": 5098
4235+
},
42244236

42254237
"Generates a sourcemap for each corresponding '.d.ts' file.": {
42264238
"category": "Message",

‎src/compiler/program.ts

Lines changed: 70 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1021,8 +1021,8 @@ namespace ts {
10211021
* @param configFileParsingDiagnostics - error during config file parsing
10221022
* @returns A 'Program' object.
10231023
*/
1024-
export function createProgram(rootNames: readonly string[], options: CompilerOptions, host?: CompilerHost, oldProgram?: Program, configFileParsingDiagnostics?: readonly Diagnostic[]): Program;
1025-
export function createProgram(rootNamesOrOptions: readonly string[] | CreateProgramOptions, _options?: CompilerOptions, _host?: CompilerHost, _oldProgram?: Program, _configFileParsingDiagnostics?: readonly Diagnostic[]): Program {
1024+
export function createProgram(rootNames: readonly string[], options: CompilerOptions, host?: CompilerHost, oldProgram?: Program, configFileParsingDiagnostics?: readonly Diagnostic[], typeScriptVersion?: string): Program;
1025+
export function createProgram(rootNamesOrOptions: readonly string[] | CreateProgramOptions, _options?: CompilerOptions, _host?: CompilerHost, _oldProgram?: Program, _configFileParsingDiagnostics?: readonly Diagnostic[], typeScriptVersion?: string): Program {
10261026
const createProgramOptions = isArray(rootNamesOrOptions) ? createCreateProgramOptions(rootNamesOrOptions, _options!, _host, _oldProgram, _configFileParsingDiagnostics) : rootNamesOrOptions; // TODO: GH#18217
10271027
const { rootNames, options, configFileParsingDiagnostics, projectReferences } = createProgramOptions;
10281028
let { oldProgram } = createProgramOptions;
@@ -1073,6 +1073,9 @@ namespace ts {
10731073
const supportedExtensions = getSupportedExtensions(options);
10741074
const supportedExtensionsWithJsonIfResolveJsonModule = getSupportedExtensionsWithJsonIfResolveJsonModule(options, supportedExtensions);
10751075

1076+
let _typeScriptVersion: Version | undefined;
1077+
const _ignoreDeprecations = new Map<DeprecationPhase, Version>();
1078+
10761079
// Map storing if there is emit blocking diagnostics for given input
10771080
const hasEmitBlockingDiagnostics = new Map<string, boolean>();
10781081
let _compilerOptionsObjectLiteralSyntax: ObjectLiteralExpression | false | undefined;
@@ -3439,6 +3442,7 @@ namespace ts {
34393442
programDiagnostics.add(createCompilerDiagnostic(Diagnostics.Option_incremental_can_only_be_specified_using_tsconfig_emitting_to_single_file_or_when_option_tsBuildInfoFile_is_specified));
34403443
}
34413444

3445+
verifyDeprecatedCompilerOptions();
34423446
verifyProjectReferences();
34433447

34443448
// List of collected files is complete; validate exhautiveness if this is a project with a file list
@@ -3701,6 +3705,55 @@ namespace ts {
37013705
}
37023706
}
37033707

3708+
function verifyDeprecatedCompilerOptions() {
3709+
const version = isString(typeScriptVersion) && typeScriptVersion ? new Version(typeScriptVersion) : getTypeScriptVersion();
3710+
if (options.ignoreDeprecations) {
3711+
const ignoreDeprecationsVersion = getIgnoreDeprecationsVersion(options.ignoreDeprecations);
3712+
if (ignoreDeprecationsVersion.compareTo(version) === Comparison.LessThan) {
3713+
createOptionValueDiagnostic("ignoreDeprecations", Diagnostics.Invalid_value_for_ignoreDeprecations);
3714+
}
3715+
if (ignoreDeprecationsVersion.compareTo(version) >= 0) {
3716+
return;
3717+
}
3718+
}
3719+
if (options.target === ScriptTarget.ES3) {
3720+
createDeprecatedDiagnosticForOption(version, "target", "ES3");
3721+
}
3722+
if (options.noImplicitUseStrict) {
3723+
createDeprecatedDiagnosticForOption(version, "noImplicitUseStrict");
3724+
}
3725+
if (options.keyofStringsOnly) {
3726+
createDeprecatedDiagnosticForOption(version, "keyofStringsOnly");
3727+
}
3728+
if (options.suppressExcessPropertyErrors) {
3729+
createDeprecatedDiagnosticForOption(version, "suppressExcessPropertyErrors");
3730+
}
3731+
if (options.suppressImplicitAnyIndexErrors) {
3732+
createDeprecatedDiagnosticForOption(version, "suppressImplicitAnyIndexErrors");
3733+
}
3734+
if (options.noStrictGenericChecks) {
3735+
createDeprecatedDiagnosticForOption(version, "noStrictGenericChecks");
3736+
}
3737+
if (options.charset) {
3738+
createDeprecatedDiagnosticForOption(version, "charset");
3739+
}
3740+
if (options.out) {
3741+
createDeprecatedDiagnosticForOption(version, "out");
3742+
}
3743+
}
3744+
3745+
function createDeprecatedDiagnosticForOption(version: Version, name: string, value?: string) {
3746+
if (version.compareTo(getIgnoreDeprecationsVersion(DeprecationPhase.Phase3)) === Comparison.EqualTo) {
3747+
createDiagnosticForOption(/*onKey*/ !value, name, /*option2*/ undefined, Diagnostics.Flag_0_is_deprecated_please_remove_it_from_your_configuration, value || name);
3748+
}
3749+
else {
3750+
const { major, minor } = version;
3751+
const nextPhase = version.compareTo(getIgnoreDeprecationsVersion(DeprecationPhase.Phase2)) === Comparison.EqualTo ? DeprecationPhase.Phase3 : DeprecationPhase.Phase2;
3752+
createDiagnosticForOption(/*onKey*/ !value, name, /*option2*/ undefined,
3753+
Diagnostics.Flag_0_is_deprecated_and_will_stop_functioning_in_TypeScript_1_Specify_ignoreDeprecations_Colon_2_to_silence_this_error, value || name, DeprecationPhaseToVersionMap[nextPhase], `${major}.${minor}`);
3754+
}
3755+
}
3756+
37043757
function createDiagnosticExplainingFile(file: SourceFile | undefined, fileProcessingReason: FileIncludeReason | undefined, diagnostic: DiagnosticMessage, args: (string | number | undefined)[] | undefined): Diagnostic {
37053758
let fileIncludeReasons: DiagnosticMessageChain[] | undefined;
37063759
let relatedInfo: Diagnostic[] | undefined;
@@ -3972,6 +4025,21 @@ namespace ts {
39724025
return _compilerOptionsObjectLiteralSyntax || undefined;
39734026
}
39744027

4028+
function getTypeScriptVersion() {
4029+
if (_typeScriptVersion === undefined) {
4030+
_typeScriptVersion = new Version(versionMajorMinor);
4031+
}
4032+
return _typeScriptVersion;
4033+
}
4034+
4035+
function getIgnoreDeprecationsVersion(phase: DeprecationPhase) {
4036+
let version = _ignoreDeprecations.get(phase);
4037+
if (version === undefined) {
4038+
_ignoreDeprecations.set(phase, version = new Version(DeprecationPhaseToVersionMap[phase]));
4039+
}
4040+
return version;
4041+
}
4042+
39754043
function createOptionDiagnosticInObjectLiteralSyntax(objectLiteral: ObjectLiteralExpression, onKey: boolean, key1: string, key2: string | undefined, message: DiagnosticMessage, arg0?: string | number, arg1?: string | number, arg2?: string | number): boolean {
39764044
const props = getPropertyAssignment(objectLiteral, key1, key2);
39774045
for (const prop of props) {

‎src/compiler/types.ts

Lines changed: 14 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -6582,6 +6582,7 @@ namespace ts {
65826582
/*@internal*/generateCpuProfile?: string;
65836583
/*@internal*/generateTrace?: string;
65846584
/*@internal*/help?: boolean;
6585+
ignoreDeprecations?: DeprecationPhase;
65856586
importHelpers?: boolean;
65866587
importsNotUsedAsValues?: ImportsNotUsedAsValues;
65876588
/*@internal*/init?: boolean;
@@ -6740,6 +6741,19 @@ namespace ts {
67406741
LineFeed = 1
67416742
}
67426743

6744+
export const enum DeprecationPhase {
6745+
Phase1 = 1,
6746+
Phase2 = 2,
6747+
Phase3 = 3,
6748+
}
6749+
6750+
/* @internal */
6751+
export const DeprecationPhaseToVersionMap = {
6752+
[DeprecationPhase.Phase1]: "5.0",
6753+
[DeprecationPhase.Phase2]: "5.5",
6754+
[DeprecationPhase.Phase3]: "6.0",
6755+
};
6756+
67436757
export interface LineAndCharacter {
67446758
/** 0-based. */
67456759
line: number;

‎src/harness/compilerImpl.ts

Lines changed: 3 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -233,7 +233,7 @@ namespace compiler {
233233
}
234234
}
235235

236-
export function compileFiles(host: fakes.CompilerHost, rootFiles: string[] | undefined, compilerOptions: ts.CompilerOptions): CompilationResult {
236+
export function compileFiles(host: fakes.CompilerHost, rootFiles: string[] | undefined, compilerOptions: ts.CompilerOptions, typeScriptVersion?: string): CompilationResult {
237237
if (compilerOptions.project || !rootFiles || rootFiles.length === 0) {
238238
const project = readProject(host.parseConfigHost, compilerOptions.project, compilerOptions);
239239
if (project) {
@@ -258,10 +258,10 @@ namespace compiler {
258258
// and if the test is running `skipLibCheck` - an indicator that we want the tets to run quickly - skip the before/after error comparison, too
259259
const skipErrorComparison = ts.length(rootFiles) >= 100 || (!!compilerOptions.skipLibCheck && !!compilerOptions.declaration);
260260

261-
const preProgram = !skipErrorComparison ? ts.createProgram(rootFiles || [], { ...compilerOptions, configFile: compilerOptions.configFile, traceResolution: false }, host) : undefined;
261+
const preProgram = !skipErrorComparison ? ts.createProgram(rootFiles || [], { ...compilerOptions, configFile: compilerOptions.configFile, traceResolution: false }, host, /*oldProgram*/ undefined, /*configFileParsingDiagnostics*/ undefined, typeScriptVersion) : undefined;
262262
const preErrors = preProgram && ts.getPreEmitDiagnostics(preProgram);
263263

264-
const program = ts.createProgram(rootFiles || [], compilerOptions, host);
264+
const program = ts.createProgram(rootFiles || [], compilerOptions, host, /*oldProgram*/ undefined, /*configFileParsingDiagnostics*/ undefined, typeScriptVersion);
265265
const emitResult = program.emit();
266266
const postErrors = ts.getPreEmitDiagnostics(program);
267267
const longerErrors = ts.length(preErrors) > postErrors.length ? preErrors : postErrors;

‎src/harness/harnessIO.ts

Lines changed: 9 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -338,6 +338,9 @@ namespace Harness {
338338
if (value === undefined) {
339339
throw new Error(`Cannot have undefined value for compiler option '${name}'.`);
340340
}
341+
if (name === "typeScriptVersion") {
342+
continue;
343+
}
341344
const option = getCommandLineOption(name);
342345
if (option) {
343346
const errors: ts.Diagnostic[] = [];
@@ -399,9 +402,14 @@ namespace Harness {
399402
currentDirectory = vfs.srcFolder;
400403
}
401404

405+
let typeScriptVersion: string | undefined;
406+
402407
// Parse settings
403408
if (harnessSettings) {
404409
setCompilerOptionsFromHarnessSetting(harnessSettings, options);
410+
if (ts.isString(harnessSettings.typeScriptVersion) && harnessSettings.typeScriptVersion) {
411+
typeScriptVersion = harnessSettings.typeScriptVersion;
412+
}
405413
}
406414
if (options.rootDirs) {
407415
options.rootDirs = ts.map(options.rootDirs, d => ts.getNormalizedAbsolutePath(d, currentDirectory));
@@ -429,7 +437,7 @@ namespace Harness {
429437
fs.apply(symlinks);
430438
}
431439
const host = new fakes.CompilerHost(fs, options);
432-
const result = compiler.compileFiles(host, programFileNames, options);
440+
const result = compiler.compileFiles(host, programFileNames, options, typeScriptVersion);
433441
result.symlinks = symlinks;
434442
return result;
435443
}

‎tests/baselines/reference/deprecatedCompilerOptions1.errors.txt

Lines changed: 43 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,43 @@
1+
/foo/tsconfig.json(3,19): error TS5096: Flag 'ES3' is deprecated and will stop functioning in TypeScript 5.5. Specify 'ignoreDeprecations: "5.0"' to silence this error.
2+
/foo/tsconfig.json(4,9): error TS5096: Flag 'noImplicitUseStrict' is deprecated and will stop functioning in TypeScript 5.5. Specify 'ignoreDeprecations: "5.0"' to silence this error.
3+
/foo/tsconfig.json(5,9): error TS5096: Flag 'keyofStringsOnly' is deprecated and will stop functioning in TypeScript 5.5. Specify 'ignoreDeprecations: "5.0"' to silence this error.
4+
/foo/tsconfig.json(6,9): error TS5096: Flag 'suppressExcessPropertyErrors' is deprecated and will stop functioning in TypeScript 5.5. Specify 'ignoreDeprecations: "5.0"' to silence this error.
5+
/foo/tsconfig.json(7,9): error TS5096: Flag 'suppressImplicitAnyIndexErrors' is deprecated and will stop functioning in TypeScript 5.5. Specify 'ignoreDeprecations: "5.0"' to silence this error.
6+
/foo/tsconfig.json(8,9): error TS5096: Flag 'noStrictGenericChecks' is deprecated and will stop functioning in TypeScript 5.5. Specify 'ignoreDeprecations: "5.0"' to silence this error.
7+
/foo/tsconfig.json(9,9): error TS5096: Flag 'charset' is deprecated and will stop functioning in TypeScript 5.5. Specify 'ignoreDeprecations: "5.0"' to silence this error.
8+
/foo/tsconfig.json(10,9): error TS5096: Flag 'out' is deprecated and will stop functioning in TypeScript 5.5. Specify 'ignoreDeprecations: "5.0"' to silence this error.
9+
10+
11+
==== /foo/tsconfig.json (8 errors) ====
12+
{
13+
"compilerOptions": {
14+
"target": "ES3",
15+
~~~~~
16+
!!! error TS5096: Flag 'ES3' is deprecated and will stop functioning in TypeScript 5.5. Specify 'ignoreDeprecations: "5.0"' to silence this error.
17+
"noImplicitUseStrict": true,
18+
~~~~~~~~~~~~~~~~~~~~~
19+
!!! error TS5096: Flag 'noImplicitUseStrict' is deprecated and will stop functioning in TypeScript 5.5. Specify 'ignoreDeprecations: "5.0"' to silence this error.
20+
"keyofStringsOnly": true,
21+
~~~~~~~~~~~~~~~~~~
22+
!!! error TS5096: Flag 'keyofStringsOnly' is deprecated and will stop functioning in TypeScript 5.5. Specify 'ignoreDeprecations: "5.0"' to silence this error.
23+
"suppressExcessPropertyErrors": true,
24+
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
25+
!!! error TS5096: Flag 'suppressExcessPropertyErrors' is deprecated and will stop functioning in TypeScript 5.5. Specify 'ignoreDeprecations: "5.0"' to silence this error.
26+
"suppressImplicitAnyIndexErrors": true,
27+
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
28+
!!! error TS5096: Flag 'suppressImplicitAnyIndexErrors' is deprecated and will stop functioning in TypeScript 5.5. Specify 'ignoreDeprecations: "5.0"' to silence this error.
29+
"noStrictGenericChecks": true,
30+
~~~~~~~~~~~~~~~~~~~~~~~
31+
!!! error TS5096: Flag 'noStrictGenericChecks' is deprecated and will stop functioning in TypeScript 5.5. Specify 'ignoreDeprecations: "5.0"' to silence this error.
32+
"charset": "utf8",
33+
~~~~~~~~~
34+
!!! error TS5096: Flag 'charset' is deprecated and will stop functioning in TypeScript 5.5. Specify 'ignoreDeprecations: "5.0"' to silence this error.
35+
"out": "dist.js"
36+
~~~~~
37+
!!! error TS5096: Flag 'out' is deprecated and will stop functioning in TypeScript 5.5. Specify 'ignoreDeprecations: "5.0"' to silence this error.
38+
}
39+
}
40+
41+
==== /foo/a.ts (0 errors) ====
42+
const a = 1;
43+

‎tests/baselines/reference/deprecatedCompilerOptions1.js

Lines changed: 6 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,6 @@
1+
//// [a.ts]
2+
const a = 1;
3+
4+
5+
//// [dist.js]
6+
var a = 1;

‎tests/baselines/reference/deprecatedCompilerOptions1.symbols

Lines changed: 4 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,4 @@
1+
=== /foo/a.ts ===
2+
const a = 1;
3+
>a : Symbol(a, Decl(a.ts, 0, 5))
4+

‎tests/baselines/reference/deprecatedCompilerOptions1.types

Lines changed: 5 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,5 @@
1+
=== /foo/a.ts ===
2+
const a = 1;
3+
>a : 1
4+
>1 : 1
5+

‎tests/baselines/reference/deprecatedCompilerOptions2.js

Lines changed: 6 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,6 @@
1+
//// [a.ts]
2+
const a = 1;
3+
4+
5+
//// [dist.js]
6+
var a = 1;

‎tests/baselines/reference/deprecatedCompilerOptions2.symbols

Lines changed: 4 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,4 @@
1+
=== /foo/a.ts ===
2+
const a = 1;
3+
>a : Symbol(a, Decl(a.ts, 0, 5))
4+

‎tests/baselines/reference/deprecatedCompilerOptions2.types

Lines changed: 5 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,5 @@
1+
=== /foo/a.ts ===
2+
const a = 1;
3+
>a : 1
4+
>1 : 1
5+

‎tests/baselines/reference/deprecatedCompilerOptions3.errors.txt

Lines changed: 43 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,43 @@
1+
/foo/tsconfig.json(3,19): error TS5097: Flag 'ES3' is deprecated, please remove it from your configuration.
2+
/foo/tsconfig.json(4,9): error TS5097: Flag 'noImplicitUseStrict' is deprecated, please remove it from your configuration.
3+
/foo/tsconfig.json(5,9): error TS5097: Flag 'keyofStringsOnly' is deprecated, please remove it from your configuration.
4+
/foo/tsconfig.json(6,9): error TS5097: Flag 'suppressExcessPropertyErrors' is deprecated, please remove it from your configuration.
5+
/foo/tsconfig.json(7,9): error TS5097: Flag 'suppressImplicitAnyIndexErrors' is deprecated, please remove it from your configuration.
6+
/foo/tsconfig.json(8,9): error TS5097: Flag 'noStrictGenericChecks' is deprecated, please remove it from your configuration.
7+
/foo/tsconfig.json(9,9): error TS5097: Flag 'charset' is deprecated, please remove it from your configuration.
8+
/foo/tsconfig.json(10,9): error TS5097: Flag 'out' is deprecated, please remove it from your configuration.
9+
10+
11+
==== /foo/tsconfig.json (8 errors) ====
12+
{
13+
"compilerOptions": {
14+
"target": "ES3",
15+
~~~~~
16+
!!! error TS5097: Flag 'ES3' is deprecated, please remove it from your configuration.
17+
"noImplicitUseStrict": true,
18+
~~~~~~~~~~~~~~~~~~~~~
19+
!!! error TS5097: Flag 'noImplicitUseStrict' is deprecated, please remove it from your configuration.
20+
"keyofStringsOnly": true,
21+
~~~~~~~~~~~~~~~~~~
22+
!!! error TS5097: Flag 'keyofStringsOnly' is deprecated, please remove it from your configuration.
23+
"suppressExcessPropertyErrors": true,
24+
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
25+
!!! error TS5097: Flag 'suppressExcessPropertyErrors' is deprecated, please remove it from your configuration.
26+
"suppressImplicitAnyIndexErrors": true,
27+
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
28+
!!! error TS5097: Flag 'suppressImplicitAnyIndexErrors' is deprecated, please remove it from your configuration.
29+
"noStrictGenericChecks": true,
30+
~~~~~~~~~~~~~~~~~~~~~~~
31+
!!! error TS5097: Flag 'noStrictGenericChecks' is deprecated, please remove it from your configuration.
32+
"charset": "utf8",
33+
~~~~~~~~~
34+
!!! error TS5097: Flag 'charset' is deprecated, please remove it from your configuration.
35+
"out": "dist.js"
36+
~~~~~
37+
!!! error TS5097: Flag 'out' is deprecated, please remove it from your configuration.
38+
}
39+
}
40+
41+
==== /foo/a.ts (0 errors) ====
42+
const a = 1;
43+

‎tests/baselines/reference/deprecatedCompilerOptions3.js

Lines changed: 6 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,6 @@
1+
//// [a.ts]
2+
const a = 1;
3+
4+
5+
//// [dist.js]
6+
var a = 1;

‎tests/baselines/reference/deprecatedCompilerOptions3.symbols

Lines changed: 4 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,4 @@
1+
=== /foo/a.ts ===
2+
const a = 1;
3+
>a : Symbol(a, Decl(a.ts, 0, 5))
4+

‎tests/baselines/reference/deprecatedCompilerOptions3.types

Lines changed: 5 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,5 @@
1+
=== /foo/a.ts ===
2+
const a = 1;
3+
>a : 1
4+
>1 : 1
5+

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