Project Configuration - tsc CLI Options - 《TypeScript v4.3 Documentation》

Using the CLI
Compiler Options
Related

Using the CLI

Running tsc locally will compile the closest project defined by a tsconfig.json, you can compile a set of TypeScript files by passing in a glob of files you want.

# Run a compile based on a backwards look through the fs for a tsconfig.json
tsc
# Emit JS for just the index.ts with the compiler defaults
tsc index.ts
# Emit JS for any .ts files in the folder src, with the default settings
tsc src/*.ts
# Emit files referenced in with the compiler settings from tsconfig.production.json
tsc --project tsconfig.production.json
# Emit d.ts files for a js file with showing compiler options which are booleans
tsc index.js --declaration --emitDeclarationOnly
# Emit a single .js file from two files via compiler options which take string arguments
tsc app.ts util.ts --target esnext --outfile index.js

Compiler Options

If you’re looking for more information about the compiler options in a tsconfig, check out the TSConfig Reference

CLI Commands

Flag	Type
`—all`	`boolean`
Show all compiler options.
`—generateTrace`	`string`
Generates an event trace and a list of types.
`—help`	`boolean`
Gives local information for help on the CLI.
`—init`	`boolean`
Initializes a TypeScript project and creates a tsconfig.json file.
`—listFilesOnly`	`boolean`
Print names of files that are part of the compilation and then stop processing.
`—locale`	`string`
Set the language of the messaging from TypeScript. This does not affect emit.
`—project`	`string`
Compile the project given the path to its configuration file, or to a folder with a ‘tsconfig.json’.
`—showConfig`	`boolean`
Print the final configuration instead of building.
`—version`	`boolean`
Print the compiler’s version.

Build Options

Flag	Type
`—build`	`boolean`
Build one or more projects and their dependencies, if out of date
`—clean`	`boolean`
Delete the outputs of all projects.
`—dry`	`boolean`
Show what would be built (or deleted, if specified with ‘—clean’)
`—force`	`boolean`
Build all projects, including those that appear to be up to date
`—verbose`	`boolean`
Enable verbose logging

Watch Options

Flag	Type
`—excludeDirectories`	`list`
Remove a list of directories from the watch process.
`—excludeFiles`	`list`
Remove a list of files from the watch mode’s processing.
`—fallbackPolling`	`fixedPollingInterval, priorityPollingInterval, or dynamicPriorityPolling`
Specify what approach the watcher should use if the system runs out of native file watchers.
`—synchronousWatchDirectory`	`boolean`
Synchronously call callbacks and update the state of directory watchers on platforms that don`t support recursive watching natively.
`—watch`	`boolean`
Watch input files.
`—watchDirectory`	`fixedPollingInterval, dynamicPriorityPolling, or useFsEvents`
Specify how directories are watched on systems that lack recursive file-watching functionality.
`—watchFile`	`fixedPollingInterval, priorityPollingInterval, dynamicPriorityPolling, useFsEvents, or useFsEventsOnParentDirectory`
Specify how the TypeScript watch mode works.

Compiler Flags

Flag	Type	Default
`—allowJs`	`boolean`	false
Allow JavaScript files to be a part of your program. Use the `checkJS` option to get errors from these files.
`—allowSyntheticDefaultImports`	`boolean`	module === “system” or esModuleInterop
Allow ‘import x from y’ when a module doesn’t have a default export.
`—allowUmdGlobalAccess`	`boolean`	false
Allow accessing UMD globals from modules.
`—allowUnreachableCode`	`boolean`	undefined
Disable error reporting for unreachable code.
`—allowUnusedLabels`	`boolean`	undefined
Disable error reporting for unused labels.
`—alwaysStrict`	`boolean`	`false`, unless `strict` is set
Ensure ‘use strict’ is always emitted.
`—assumeChangesOnlyAffectDirectDependencies`	`boolean`
Have recompiles in projects that use `incremental` and `watch` mode assume that changes within a file will only affect files directly depending on it.
`—baseUrl`	`string`
Specify the base directory to resolve non-relative module names.
`—charset`	`string`	utf8
No longer supported. In early versions, manually set the text encoding for reading files.
`—checkJs`	`boolean`	false
Enable error reporting in type-checked JavaScript files.
`—composite`	`boolean`	false
Enable constraints that allow a TypeScript project to be used with project references.
`—declaration`	`boolean`	`false`, unless `composite` is set
Generate .d.ts files from TypeScript and JavaScript files in your project.
`—declarationDir`	`string`	n/a
Specify the output directory for generated declaration files.
`—declarationMap`	`boolean`	false
Create sourcemaps for d.ts files.
`—diagnostics`	`boolean`	false
Output compiler performance information after building.
`—disableReferencedProjectLoad`	`boolean`
Reduce the number of projects loaded automatically by TypeScript.
`—disableSizeLimit`	`boolean`	false
Remove the 20mb cap on total source code size for JavaScript files in the TypeScript language server.
`—disableSolutionSearching`	`boolean`
Opt a project out of multi-project reference checking when editing.
`—disableSourceOfProjectReferenceRedirect`	`boolean`
Disable preferring source files instead of declaration files when referencing composite projects
`—downlevelIteration`	`boolean`	false
Emit more compliant, but verbose and less performant JavaScript for iteration.
`—emitBOM`	`boolean`	false
Emit a UTF-8 Byte Order Mark (BOM) in the beginning of output files.
`—emitDeclarationOnly`	`boolean`	false
Only output d.ts files and not JavaScript files.
`—emitDecoratorMetadata`	`boolean`
Emit design-type metadata for decorated declarations in source files.
`—esModuleInterop`	`boolean`	false
Emit additional JavaScript to ease support for importing CommonJS modules. This enables `allowSyntheticDefaultImports` for type compatibility.
`—experimentalDecorators`	`boolean`
Enable experimental support for TC39 stage 2 draft decorators.
`—explainFiles`	`boolean`
Print files read during the compilation including why it was included.
`—extendedDiagnostics`	`boolean`	false
Output more detailed compiler performance information after building.
`—forceConsistentCasingInFileNames`	`boolean`	false
Ensure that casing is correct in imports.
`—generateCpuProfile`	`string`	profile.cpuprofile
Emit a v8 CPU profile of the compiler run for debugging.
`—importHelpers`	`boolean`	false
Allow importing helper functions from tslib once per project, instead of including them per-file.
`—importsNotUsedAsValues`	`remove, preserve, or error`
Specify emit/checking behavior for imports that are only used for types.
`—incremental`	`boolean`	`true` if `composite`, `false` otherwise
Save .tsbuildinfo files to allow for incremental compilation of projects.
`—inlineSourceMap`	`boolean`	false
Include sourcemap files inside the emitted JavaScript.
`—inlineSources`	`boolean`	false
Include source code in the sourcemaps inside the emitted JavaScript.
`—isolatedModules`	`boolean`	false
Ensure that each file can be safely transpiled without relying on other imports.
`—jsx`	`react, react-jsx, react-jsxdev, react-native, or preserve`	undefined
Specify what JSX code is generated.
`—jsxFactory`	`string`	`React.createElement`
Specify the JSX factory function used when targeting React JSX emit, e.g. ‘React.createElement’ or ‘h’
`—jsxFragmentFactory`	`string`
Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. ‘React.Fragment’ or ‘Fragment’.
`—jsxImportSource`	`string`	react
Specify module specifier used to import the JSX factory functions when using `jsx: react-jsx*`.</p></td></tr><tr name="keyofStringsOnly"><td><code><a href="$889bbc2ea6ad166e.md#keyofStringsOnly">--keyofStringsOnly</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Make keyof only return strings instead of string, numbers or symbols. Legacy option.</p></td></tr><tr name="lib"><td><code><a href="$889bbc2ea6ad166e.md#lib">--lib</a></code></td><td><code>list</code></td><td></td></tr><tr><td colspan="3"><p>Specify a set of bundled library declaration files that describe the target runtime environment.</p></td></tr><tr name="listEmittedFiles"><td><code><a href="$889bbc2ea6ad166e.md#listEmittedFiles">--listEmittedFiles</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Print the names of emitted files after a compilation.</p></td></tr><tr name="listFiles"><td><code><a href="$889bbc2ea6ad166e.md#listFiles">--listFiles</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Print all of the files read during the compilation.</p></td></tr><tr name="mapRoot"><td><code><a href="$889bbc2ea6ad166e.md#mapRoot">--mapRoot</a></code></td><td><code>string</code></td><td></td></tr><tr><td colspan="3"><p>Specify the location where debugger should locate map files instead of generated locations.</p></td></tr><tr name="maxNodeModuleJsDepth"><td><code><a href="$889bbc2ea6ad166e.md#maxNodeModuleJsDepth">--maxNodeModuleJsDepth</a></code></td><td><code>number</code></td><td><p>0</p></td></tr><tr><td colspan="3"><p>Specify the maximum folder depth used for checking JavaScript files from <code>node_modules</code>. Only applicable with <code>allowJs</code>.</p></td></tr><tr name="module"><td><code><a href="$889bbc2ea6ad166e.md#module">--module</a></code></td><td><code><code>CommonJS`(default if`target`is`ES3`or`ES5`)</code>, <code></code>, <code>`ES2015`</code>, <code>`ES2020`</code>, <code></code>, <code>`None`</code>, <code>`UMD`</code>, <code>`AMD`</code>, <code>`System`</code>, or <code>`ESNext</code></code></td><td></td></tr><tr><td colspan="3"><p>Specify what module code is generated.</p></td></tr><tr name="moduleResolution"><td><code><a href="$889bbc2ea6ad166e.md#moduleResolution">--moduleResolution</a></code></td><td><code></code></td><td><p>module === <code>AMD</code> or <code>UMD</code> or <code>System</code> or <code>ES6</code>, then <code>Classic</code><br><br>Otherwise <code>Node</code></p></td></tr><tr><td colspan="3"><p>Specify how TypeScript looks up a file from a given module specifier.</p></td></tr><tr name="newLine"><td><code><a href="$889bbc2ea6ad166e.md#newLine">--newLine</a></code></td><td><code></code></td><td><p>Platform specific</p></td></tr><tr><td colspan="3"><p>Set the newline character for emitting files.</p></td></tr><tr name="noEmit"><td><code><a href="$889bbc2ea6ad166e.md#noEmit">--noEmit</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Disable emitting file from a compilation.</p></td></tr><tr name="noEmitHelpers"><td><code><a href="$889bbc2ea6ad166e.md#noEmitHelpers">--noEmitHelpers</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Disable generating custom helper functions like <code>__extends</code> in compiled output.</p></td></tr><tr name="noEmitOnError"><td><code><a href="$889bbc2ea6ad166e.md#noEmitOnError">--noEmitOnError</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Disable emitting files if any type checking errors are reported.</p></td></tr><tr name="noErrorTruncation"><td><code><a href="$889bbc2ea6ad166e.md#noErrorTruncation">--noErrorTruncation</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Disable truncating types in error messages.</p></td></tr><tr name="noFallthroughCasesInSwitch"><td><code><a href="$889bbc2ea6ad166e.md#noFallthroughCasesInSwitch">--noFallthroughCasesInSwitch</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Enable error reporting for fallthrough cases in switch statements.</p></td></tr><tr name="noImplicitAny"><td><code><a href="$889bbc2ea6ad166e.md#noImplicitAny">--noImplicitAny</a></code></td><td><code>boolean</code></td><td><p><code>false</code>, unless <code>strict</code> is set</p></td></tr><tr><td colspan="3"><p>Enable error reporting for expressions and declarations with an implied <code>any</code> type..</p></td></tr><tr name="noImplicitOverride"><td><code><a href="$889bbc2ea6ad166e.md#noImplicitOverride">--noImplicitOverride</a></code></td><td><code>boolean</code></td><td></td></tr><tr><td colspan="3"><p>Ensure overriding members in derived classes are marked with an override modifier.</p></td></tr><tr name="noImplicitReturns"><td><code><a href="$889bbc2ea6ad166e.md#noImplicitReturns">--noImplicitReturns</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Enable error reporting for codepaths that do not explicitly return in a function.</p></td></tr><tr name="noImplicitThis"><td><code><a href="$889bbc2ea6ad166e.md#noImplicitThis">--noImplicitThis</a></code></td><td><code>boolean</code></td><td><p><code>false</code>, unless <code>strict</code> is set</p></td></tr><tr><td colspan="3"><p>Enable error reporting when <code>this</code> is given the type <code>any</code>.</p></td></tr><tr name="noImplicitUseStrict"><td><code><a href="$889bbc2ea6ad166e.md#noImplicitUseStrict">--noImplicitUseStrict</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Disable adding 'use strict' directives in emitted JavaScript files.</p></td></tr><tr name="noLib"><td><code><a href="$889bbc2ea6ad166e.md#noLib">--noLib</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Disable including any library files, including the default lib.d.ts.</p></td></tr><tr name="noPropertyAccessFromIndexSignature"><td><code><a href="$889bbc2ea6ad166e.md#noPropertyAccessFromIndexSignature">--noPropertyAccessFromIndexSignature</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Enforces using indexed accessors for keys declared using an indexed type</p></td></tr><tr name="noResolve"><td><code><a href="$889bbc2ea6ad166e.md#noResolve">--noResolve</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Disallow <code>import</code>s, <code>require</code>s or <code><reference></code>s from expanding the number of files TypeScript should add to a project.</p></td></tr><tr name="noStrictGenericChecks"><td><code><a href="$889bbc2ea6ad166e.md#noStrictGenericChecks">--noStrictGenericChecks</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Disable strict checking of generic signatures in function types.</p></td></tr><tr name="noUncheckedIndexedAccess"><td><code><a href="$889bbc2ea6ad166e.md#noUncheckedIndexedAccess">--noUncheckedIndexedAccess</a></code></td><td><code>boolean</code></td><td></td></tr><tr><td colspan="3"><p>Add <code>undefined</code> to a type when accessed using an index.</p></td></tr><tr name="noUnusedLocals"><td><code><a href="$889bbc2ea6ad166e.md#noUnusedLocals">--noUnusedLocals</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Enable error reporting when a local variables aren't read.</p></td></tr><tr name="noUnusedParameters"><td><code><a href="$889bbc2ea6ad166e.md#noUnusedParameters">--noUnusedParameters</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Raise an error when a function parameter isn't read</p></td></tr><tr name="out"><td><code><a href="$889bbc2ea6ad166e.md#out">--out</a></code></td><td><code>string</code></td><td><p>n/a</p></td></tr><tr><td colspan="3"><p>Deprecated setting. Use <code>outFile</code> instead.</p></td></tr><tr name="outDir"><td><code><a href="$889bbc2ea6ad166e.md#outDir">--outDir</a></code></td><td><code>string</code></td><td><p>n/a</p></td></tr><tr><td colspan="3"><p>Specify an output folder for all emitted files.</p></td></tr><tr name="outFile"><td><code><a href="$889bbc2ea6ad166e.md#outFile">--outFile</a></code></td><td><code>string</code></td><td><p>n/a</p></td></tr><tr><td colspan="3"><p>Specify a file that bundles all outputs into one JavaScript file. If <code>declaration</code> is true, also designates a file that bundles all .d.ts output.</p></td></tr><tr name="paths"><td><code><a href="$889bbc2ea6ad166e.md#paths">--paths</a></code></td><td><code>object</code></td><td></td></tr><tr><td colspan="3"><p>Specify a set of entries that re-map imports to additional lookup locations.</p></td></tr><tr name="plugins"><td><code><a href="$889bbc2ea6ad166e.md#plugins">--plugins</a></code></td><td><code>list</code></td><td></td></tr><tr><td colspan="3"><p>Specify a list of language service plugins to include.</p></td></tr><tr name="preserveConstEnums"><td><code><a href="$889bbc2ea6ad166e.md#preserveConstEnums">--preserveConstEnums</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Disable erasing <code>const enum</code> declarations in generated code.</p></td></tr><tr name="preserveSymlinks"><td><code><a href="$889bbc2ea6ad166e.md#preserveSymlinks">--preserveSymlinks</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Disable resolving symlinks to their realpath. This correlates to the same flag in node.</p></td></tr><tr name="preserveWatchOutput"><td><code><a href="$889bbc2ea6ad166e.md#preserveWatchOutput">--preserveWatchOutput</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Disable wiping the console in watch mode</p></td></tr><tr name="pretty"><td><code><a href="$889bbc2ea6ad166e.md#pretty">--pretty</a></code></td><td><code>boolean</code></td><td><p>true</p></td></tr><tr><td colspan="3"><p>Enable color and formatting in output to make compiler errors easier to read</p></td></tr><tr name="reactNamespace"><td><code><a href="$889bbc2ea6ad166e.md#reactNamespace">--reactNamespace</a></code></td><td><code>string</code></td><td><p>"React"</p></td></tr><tr><td colspan="3"><p>Specify the object invoked for <code>createElement</code>. This only applies when targeting <code>react</code> JSX emit.</p></td></tr><tr name="removeComments"><td><code><a href="$889bbc2ea6ad166e.md#removeComments">--removeComments</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Disable emitting comments.</p></td></tr><tr name="resolveJsonModule"><td><code><a href="$889bbc2ea6ad166e.md#resolveJsonModule">--resolveJsonModule</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Enable importing .json files</p></td></tr><tr name="rootDir"><td><code><a href="$889bbc2ea6ad166e.md#rootDir">--rootDir</a></code></td><td><code>string</code></td><td><p>Computed from the list of input files</p></td></tr><tr><td colspan="3"><p>Specify the root folder within your source files.</p></td></tr><tr name="rootDirs"><td><code><a href="$889bbc2ea6ad166e.md#rootDirs">--rootDirs</a></code></td><td><code>list</code></td><td></td></tr><tr><td colspan="3"><p>Allow multiple folders to be treated as one when resolving modules.</p></td></tr><tr name="skipDefaultLibCheck"><td><code><a href="$889bbc2ea6ad166e.md#skipDefaultLibCheck">--skipDefaultLibCheck</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Skip type checking .d.ts files that are included with TypeScript.</p></td></tr><tr name="skipLibCheck"><td><code><a href="$889bbc2ea6ad166e.md#skipLibCheck">--skipLibCheck</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Skip type checking all .d.ts files.</p></td></tr><tr name="sourceMap"><td><code><a href="$889bbc2ea6ad166e.md#sourceMap">--sourceMap</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Create source map files for emitted JavaScript files.</p></td></tr><tr name="sourceRoot"><td><code><a href="$889bbc2ea6ad166e.md#sourceRoot">--sourceRoot</a></code></td><td><code>string</code></td><td></td></tr><tr><td colspan="3"><p>Specify the root path for debuggers to find the reference source code.</p></td></tr><tr name="strict"><td><code><a href="$889bbc2ea6ad166e.md#strict">--strict</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Enable all strict type checking options.</p></td></tr><tr name="strictBindCallApply"><td><code><a href="$889bbc2ea6ad166e.md#strictBindCallApply">--strictBindCallApply</a></code></td><td><code>boolean</code></td><td><p><code>false</code>, unless <code>strict</code> is set</p></td></tr><tr><td colspan="3"><p>Check that the arguments for <code>bind</code>, <code>call</code>, and <code>apply</code> methods match the original function.</p></td></tr><tr name="strictFunctionTypes"><td><code><a href="$889bbc2ea6ad166e.md#strictFunctionTypes">--strictFunctionTypes</a></code></td><td><code>boolean</code></td><td><p><code>false</code>, unless <code>strict</code> is set</p></td></tr><tr><td colspan="3"><p>When assigning functions, check to ensure parameters and the return values are subtype-compatible.</p></td></tr><tr name="strictNullChecks"><td><code><a href="$889bbc2ea6ad166e.md#strictNullChecks">--strictNullChecks</a></code></td><td><code>boolean</code></td><td><p><code>false</code>, unless <code>strict</code> is set</p></td></tr><tr><td colspan="3"><p>When type checking, take into account <code>null</code> and <code>undefined</code>.</p></td></tr><tr name="strictPropertyInitialization"><td><code><a href="$889bbc2ea6ad166e.md#strictPropertyInitialization">--strictPropertyInitialization</a></code></td><td><code>boolean</code></td><td><p><code>false</code>, unless <code>strict</code> is set</p></td></tr><tr><td colspan="3"><p>Check for class properties that are declared but not set in the constructor.</p></td></tr><tr name="stripInternal"><td><code><a href="$889bbc2ea6ad166e.md#stripInternal">--stripInternal</a></code></td><td><code>boolean</code></td><td></td></tr><tr><td colspan="3"><p>Disable emitting declarations that have <code>@internal</code> in their JSDoc comments.</p></td></tr><tr name="suppressExcessPropertyErrors"><td><code><a href="$889bbc2ea6ad166e.md#suppressExcessPropertyErrors">--suppressExcessPropertyErrors</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Disable reporting of excess property errors during the creation of object literals.</p></td></tr><tr name="suppressImplicitAnyIndexErrors"><td><code><a href="$889bbc2ea6ad166e.md#suppressImplicitAnyIndexErrors">--suppressImplicitAnyIndexErrors</a></code></td><td><code>boolean</code></td><td><p>false</p></td></tr><tr><td colspan="3"><p>Suppress <code>noImplicitAny</code> errors when indexing objects that lack index signatures.</p></td></tr><tr name="target"><td><code><a href="$889bbc2ea6ad166e.md#target">--target</a></code></td><td><code><code>ES3`(default)</code>, <code>`ES5`</code>, <code>`ES6`/`ES2015`(synonymous)</code>, <code>`ES7`/`ES2016`</code>, <code>`ES2017`</code>, <code>`ES2018`</code>, <code>`ES2019`</code>, <code>`ES2020`</code>, or <code>`ESNext`			ES3
Set the JavaScript language version for emitted JavaScript and include compatible library declarations.
`—traceResolution`	`boolean`	false
Log paths used during the `moduleResolution` process.
`—tsBuildInfoFile`	`string`	.tsbuildinfo
Specify the folder for .tsbuildinfo incremental compilation files.
`—typeRoots`	`list`
Specify multiple folders that act like `./node_modules/@types`.
`—types`	`list`
Specify type package names to be included without being referenced in a source file.
`—useDefineForClassFields`	`boolean`	false
Emit ECMAScript-standard-compliant class fields.

Every option is fully explained in the TSConfig Reference.
Learn how to use a tsconfig.json files.
Learn how to work in an MSBuild project.