Support FORCE_COLOR

src/compiler/executeCommandLine.ts

@@ -157,7 +157,13 @@ function updateReportDiagnostic(
 }
 
 function defaultIsPretty(sys: System) {
-    return !!sys.writeOutputIsTTY && sys.writeOutputIsTTY() && !sys.getEnvironmentVariable("NO_COLOR");
+    if (sys.getEnvironmentVariable("NO_COLOR")) {
+        return false;
+    }
+    if (sys.getEnvironmentVariable("FORCE_COLOR")) {
+        return true;
+    }
+    return !!sys.writeOutputIsTTY && sys.writeOutputIsTTY();
 }
 
 function shouldBePretty(sys: System, options: CompilerOptions | BuildOptions) {

src/testRunner/unittests/tsc/commandLine.ts

@@ -30,6 +30,26 @@ describe("unittests:: tsc:: commandLine::", () => {
         commandLineArgs: emptyArray,
     });
 
+    verifyTsc({
+        scenario: "commandLine",
+        subScenario: "adds color when FORCE_COLOR is set",
+        sys: () =>
+            TestServerHost.createWatchedSystem(emptyArray, {
+                environmentVariables: new Map([["FORCE_COLOR", "true"]]),
+            }),
+        commandLineArgs: emptyArray,
+    });
+
+    verifyTsc({
+        scenario: "commandLine",
+        subScenario: "does not add color when NO_COLOR is set even if FORCE_COLOR is set",
+        sys: () =>
+            TestServerHost.createWatchedSystem(emptyArray, {
+                environmentVariables: new Map([["NO_COLOR", "true"], ["FORCE_COLOR", "true"]]),
+            }),
+        commandLineArgs: emptyArray,
+    });
+
     verifyTsc({
         scenario: "commandLine",
         subScenario: "when build not first argument",

tests/baselines/reference/tsc/commandLine/adds-color-when-FORCE_COLOR-is-set.js

@@ -0,0 +1,167 @@
+currentDirectory:: /home/src/workspaces/project useCaseSensitiveFileNames:: false
+Input::
+//// [/home/src/tslibs/TS/Lib/lib.d.ts]
+interface Boolean {}
+interface Function {}
+interface CallableFunction {}
+interface NewableFunction {}
+interface IArguments {}
+interface Number { toExponential: any; }
+interface Object {}
+interface RegExp {}
+interface String { charAt: any; }
+interface Array<T> { length: number; [n: number]: T; }
+interface ReadonlyArray<T> {}
+declare const console: { log(msg: any): void; };
+
+
+/home/src/tslibs/TS/Lib/tsc.js 
+Output::
+Version FakeTSVersion
+tsc: The TypeScript Compiler - Version FakeTSVersion
+
+COMMON COMMANDS
+
+  tsc
+  Compiles the current project (tsconfig.json in the working directory.)
+
+  tsc app.ts util.ts
+  Ignoring tsconfig.json, compiles the specified files with default compiler options.
+
+  tsc -b
+  Build a composite project in the working directory.
+
+  tsc --init
+  Creates a tsconfig.json with the recommended settings in the working directory.
+
+  tsc -p ./path/to/tsconfig.json
+  Compiles the TypeScript project located at the specified path.
+
+  tsc --help --all
+  An expanded version of this information, showing all possible compiler options
+
+  tsc --noEmit
+  tsc --target esnext
+  Compiles the current project, with additional settings.
+
+COMMAND LINE FLAGS
+
+--help, -h
+Print this message.
+
+--watch, -w
+Watch input files.
+
+--all
+Show all compiler options.
+
+--version, -v
+Print the compiler's version.
+
+--init
+Initializes a TypeScript project and creates a tsconfig.json file.
+
+--project, -p
+Compile the project given the path to its configuration file, or to a folder with a 'tsconfig.json'.
+
+--showConfig
+Print the final configuration instead of building.
+
+--ignoreConfig
+Ignore the tsconfig found and build with commandline options and files.
+
+--build, -b
+Build one or more projects and their dependencies, if out of date
+
+COMMON COMPILER OPTIONS
+
+--pretty
+Enable color and formatting in TypeScript's output to make compiler errors easier to read.
+type: boolean
+default: true
+
+--declaration, -d
+Generate .d.ts files from TypeScript and JavaScript files in your project.
+type: boolean
+default: `false`, unless `composite` is set
+
+--declarationMap
+Create sourcemaps for d.ts files.
+type: boolean
+default: false
+
+--emitDeclarationOnly
+Only output d.ts files and not JavaScript files.
+type: boolean
+default: false
+
+--sourceMap
+Create source map files for emitted JavaScript files.
+type: boolean
+default: false
+
+--noEmit
+Disable emitting files from a compilation.
+type: boolean
+default: false
+
+--target, -t
+Set the JavaScript language version for emitted JavaScript and include compatible library declarations.
+one of: es5, es6/es2015, es2016, es2017, es2018, es2019, es2020, es2021, es2022, es2023, es2024, esnext
+default: es5
+
+--module, -m
+Specify what module code is generated.
+one of: commonjs, es6/es2015, es2020, es2022, esnext, node16, node18, node20, nodenext, preserve
+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, es2024, 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.arraybuffer, 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.string, es2022.regexp, es2023.array, es2023.collection, es2023.intl, es2024.arraybuffer, es2024.collection, es2024.object/esnext.object, es2024.promise, es2024.regexp/esnext.regexp, es2024.sharedmemory, es2024.string/esnext.string, esnext.array, esnext.collection, esnext.intl, esnext.disposable, esnext.promise, esnext.decorators, esnext.iterator, esnext.float16, esnext.typedarrays, esnext.error, esnext.sharedmemory, decorators, decorators.legacy
+default: undefined
+
+--allowJs
+Allow JavaScript files to be a part of your program. Use the 'checkJs' option to get errors from these files.
+type: boolean
+default: `false`, unless `checkJs` is set
+
+--checkJs
+Enable error reporting in type-checked JavaScript files.
+type: boolean
+default: false
+
+--jsx
+Specify what JSX code is generated.
+one of: preserve, react, react-native, react-jsx, react-jsxdev
+default: undefined
+
+--outFile
+Specify a file that bundles all outputs into one JavaScript file. If 'declaration' is true, also designates a file that bundles all .d.ts output.
+
+--outDir
+Specify an output folder for all emitted files.
+
+--removeComments
+Disable emitting comments.
+type: boolean
+default: false
+
+--strict
+Enable all strict type-checking options.
+type: boolean
+default: false
+
+--types
+Specify type package names to be included without being referenced in a source file.
+
+--esModuleInterop
+Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility.
+type: boolean
+default: true
+
+You can learn about all of the compiler options at https://aka.ms/tsc
+
+
+
+
+exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped

tests/baselines/reference/tsc/commandLine/does-not-add-color-when-NO_COLOR-is-set-even-if-FORCE_COLOR-is-set.js

@@ -0,0 +1,167 @@
+currentDirectory:: /home/src/workspaces/project useCaseSensitiveFileNames:: false
+Input::
+//// [/home/src/tslibs/TS/Lib/lib.d.ts]
+interface Boolean {}
+interface Function {}
+interface CallableFunction {}
+interface NewableFunction {}
+interface IArguments {}
+interface Number { toExponential: any; }
+interface Object {}
+interface RegExp {}
+interface String { charAt: any; }
+interface Array<T> { length: number; [n: number]: T; }
+interface ReadonlyArray<T> {}
+declare const console: { log(msg: any): void; };
+
+
+/home/src/tslibs/TS/Lib/tsc.js 
+Output::
+Version FakeTSVersion
+tsc: The TypeScript Compiler - Version FakeTSVersion
+
+COMMON COMMANDS
+
+  tsc
+  Compiles the current project (tsconfig.json in the working directory.)
+
+  tsc app.ts util.ts
+  Ignoring tsconfig.json, compiles the specified files with default compiler options.
+
+  tsc -b
+  Build a composite project in the working directory.
+
+  tsc --init
+  Creates a tsconfig.json with the recommended settings in the working directory.
+
+  tsc -p ./path/to/tsconfig.json
+  Compiles the TypeScript project located at the specified path.
+
+  tsc --help --all
+  An expanded version of this information, showing all possible compiler options
+
+  tsc --noEmit
+  tsc --target esnext
+  Compiles the current project, with additional settings.
+
+COMMAND LINE FLAGS
+
+--help, -h
+Print this message.
+
+--watch, -w
+Watch input files.
+
+--all
+Show all compiler options.
+
+--version, -v
+Print the compiler's version.
+
+--init
+Initializes a TypeScript project and creates a tsconfig.json file.
+
+--project, -p
+Compile the project given the path to its configuration file, or to a folder with a 'tsconfig.json'.
+
+--showConfig
+Print the final configuration instead of building.
+
+--ignoreConfig
+Ignore the tsconfig found and build with commandline options and files.
+
+--build, -b
+Build one or more projects and their dependencies, if out of date
+
+COMMON COMPILER OPTIONS
+
+--pretty
+Enable color and formatting in TypeScript's output to make compiler errors easier to read.
+type: boolean
+default: true
+
+--declaration, -d
+Generate .d.ts files from TypeScript and JavaScript files in your project.
+type: boolean
+default: `false`, unless `composite` is set
+
+--declarationMap
+Create sourcemaps for d.ts files.
+type: boolean
+default: false
+
+--emitDeclarationOnly
+Only output d.ts files and not JavaScript files.
+type: boolean
+default: false
+
+--sourceMap
+Create source map files for emitted JavaScript files.
+type: boolean
+default: false
+
+--noEmit
+Disable emitting files from a compilation.
+type: boolean
+default: false
+
+--target, -t
+Set the JavaScript language version for emitted JavaScript and include compatible library declarations.
+one of: es5, es6/es2015, es2016, es2017, es2018, es2019, es2020, es2021, es2022, es2023, es2024, esnext
+default: es5
+
+--module, -m
+Specify what module code is generated.
+one of: commonjs, es6/es2015, es2020, es2022, esnext, node16, node18, node20, nodenext, preserve
+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, es2024, 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.arraybuffer, 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.string, es2022.regexp, es2023.array, es2023.collection, es2023.intl, es2024.arraybuffer, es2024.collection, es2024.object/esnext.object, es2024.promise, es2024.regexp/esnext.regexp, es2024.sharedmemory, es2024.string/esnext.string, esnext.array, esnext.collection, esnext.intl, esnext.disposable, esnext.promise, esnext.decorators, esnext.iterator, esnext.float16, esnext.typedarrays, esnext.error, esnext.sharedmemory, decorators, decorators.legacy
+default: undefined
+
+--allowJs
+Allow JavaScript files to be a part of your program. Use the 'checkJs' option to get errors from these files.
+type: boolean
+default: `false`, unless `checkJs` is set
+
+--checkJs
+Enable error reporting in type-checked JavaScript files.
+type: boolean
+default: false
+
+--jsx
+Specify what JSX code is generated.
+one of: preserve, react, react-native, react-jsx, react-jsxdev
+default: undefined
+
+--outFile
+Specify a file that bundles all outputs into one JavaScript file. If 'declaration' is true, also designates a file that bundles all .d.ts output.
+
+--outDir
+Specify an output folder for all emitted files.
+
+--removeComments
+Disable emitting comments.
+type: boolean
+default: false
+
+--strict
+Enable all strict type-checking options.
+type: boolean
+default: false
+
+--types
+Specify type package names to be included without being referenced in a source file.
+
+--esModuleInterop
+Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility.
+type: boolean
+default: true
+
+You can learn about all of the compiler options at https://aka.ms/tsc
+
+
+
+
+exitCode:: ExitStatus.DiagnosticsPresent_OutputsSkipped