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import {
AlternateModeDiagnostics, append, arrayFrom, ArrayLiteralExpression, arrayToMap, assign, BuildOptions,
changeExtension, CharacterCodes, combinePaths, CommandLineOption, CommandLineOptionOfCustomType,
CommandLineOptionOfListType, CompilerOptions, CompilerOptionsValue, ConfigFileSpecs, containsPath,
convertToRelativePath, createCompilerDiagnostic, createDiagnosticForNodeInSourceFile, createGetCanonicalFileName,
Debug, Diagnostic, DiagnosticMessage, Diagnostics, DidYouMeanOptionsDiagnostics, directorySeparator, emptyArray,
endsWith, ensureTrailingDirectorySeparator, every, Expression, extend, Extension, FileExtensionInfo,
fileExtensionIs, fileExtensionIsOneOf, filter, filterMutate, find, findIndex, firstDefined, flatten, forEach,
forEachEntry, getBaseFileName, getDirectoryPath, getEntries, getFileMatcherPatterns, getLocaleSpecificMessage,
getNormalizedAbsolutePath, getRegexFromPattern, getRegularExpressionForWildcard, getRegularExpressionsForWildcards,
getRelativePathFromFile, getSpellingSuggestion, getSupportedExtensions,
getSupportedExtensionsWithJsonIfResolveJsonModule, getTextOfPropertyName, getTsConfigPropArray,
getTsConfigPropArrayElementValue, hasExtension, hasProperty, ImportsNotUsedAsValues, isArray,
isArrayLiteralExpression, isComputedNonLiteralName, isImplicitGlob, isObjectLiteralExpression, isRootedDiskPath,
isString, isStringDoubleQuoted, isStringLiteral, JsonSourceFile, JsxEmit, length, map, mapDefined, mapIterator,
MapLike, ModuleDetectionKind, ModuleKind, ModuleResolutionKind, NewLineKind, Node, NodeArray,
nodeModuleNameResolver, normalizePath, normalizeSlashes, NumericLiteral, ObjectLiteralExpression, ParseConfigHost,
ParsedCommandLine, parseJsonText, Path, PollingWatchKind, PrefixUnaryExpression, ProjectReference, PropertyName,
Push, removeTrailingDirectorySeparator, returnTrue, ScriptTarget, startsWith, StringLiteral, SyntaxKind, sys,
toFileNameLowerCase, toPath, tracing, trimString, TsConfigOnlyOption, TsConfigSourceFile, TypeAcquisition,
unescapeLeadingUnderscores, WatchDirectoryFlags, WatchDirectoryKind, WatchFileKind, WatchOptions,
} from "./_namespaces/ts";
/** @internal */
export const compileOnSaveCommandLineOption: CommandLineOption = {
name: "compileOnSave",
type: "boolean",
defaultValueDescription: false,
};
const jsxOptionMap = new Map(getEntries({
"preserve": JsxEmit.Preserve,
"react-native": JsxEmit.ReactNative,
"react": JsxEmit.React,
"react-jsx": JsxEmit.ReactJSX,
"react-jsxdev": JsxEmit.ReactJSXDev,
}));
/** @internal */
export const inverseJsxOptionMap = new Map(arrayFrom(mapIterator(jsxOptionMap.entries(), ([key, value]: [string, JsxEmit]) => ["" + value, key] as const)));
// NOTE: The order here is important to default lib ordering as entries will have the same
// order in the generated program (see `getDefaultLibPriority` in program.ts). This
// order also affects overload resolution when a type declared in one lib is
// augmented in another lib.
const libEntries: [string, string][] = [
// JavaScript only
["es5", "lib.es5.d.ts"],
["es6", "lib.es2015.d.ts"],
["es2015", "lib.es2015.d.ts"],
["es7", "lib.es2016.d.ts"],
["es2016", "lib.es2016.d.ts"],
["es2017", "lib.es2017.d.ts"],
["es2018", "lib.es2018.d.ts"],
["es2019", "lib.es2019.d.ts"],
["es2020", "lib.es2020.d.ts"],
["es2021", "lib.es2021.d.ts"],
["es2022", "lib.es2022.d.ts"],
["esnext", "lib.esnext.d.ts"],
// Host only
["dom", "lib.dom.d.ts"],
["dom.iterable", "lib.dom.iterable.d.ts"],
["webworker", "lib.webworker.d.ts"],
["webworker.importscripts", "lib.webworker.importscripts.d.ts"],
["webworker.iterable", "lib.webworker.iterable.d.ts"],
["scripthost", "lib.scripthost.d.ts"],
// ES2015 Or ESNext By-feature options
["es2015.core", "lib.es2015.core.d.ts"],
["es2015.collection", "lib.es2015.collection.d.ts"],
["es2015.generator", "lib.es2015.generator.d.ts"],
["es2015.iterable", "lib.es2015.iterable.d.ts"],
["es2015.promise", "lib.es2015.promise.d.ts"],
["es2015.proxy", "lib.es2015.proxy.d.ts"],
["es2015.reflect", "lib.es2015.reflect.d.ts"],
["es2015.symbol", "lib.es2015.symbol.d.ts"],
["es2015.symbol.wellknown", "lib.es2015.symbol.wellknown.d.ts"],
["es2016.array.include", "lib.es2016.array.include.d.ts"],
["es2017.object", "lib.es2017.object.d.ts"],
["es2017.sharedmemory", "lib.es2017.sharedmemory.d.ts"],
["es2017.string", "lib.es2017.string.d.ts"],
["es2017.intl", "lib.es2017.intl.d.ts"],
["es2017.typedarrays", "lib.es2017.typedarrays.d.ts"],
["es2018.asyncgenerator", "lib.es2018.asyncgenerator.d.ts"],
["es2018.asynciterable", "lib.es2018.asynciterable.d.ts"],
["es2018.intl", "lib.es2018.intl.d.ts"],
["es2018.promise", "lib.es2018.promise.d.ts"],
["es2018.regexp", "lib.es2018.regexp.d.ts"],
["es2019.array", "lib.es2019.array.d.ts"],
["es2019.object", "lib.es2019.object.d.ts"],
["es2019.string", "lib.es2019.string.d.ts"],
["es2019.symbol", "lib.es2019.symbol.d.ts"],
["es2019.intl", "lib.es2019.intl.d.ts"],
["es2020.bigint", "lib.es2020.bigint.d.ts"],
["es2020.date", "lib.es2020.date.d.ts"],
["es2020.promise", "lib.es2020.promise.d.ts"],
["es2020.sharedmemory", "lib.es2020.sharedmemory.d.ts"],
["es2020.string", "lib.es2020.string.d.ts"],
["es2020.symbol.wellknown", "lib.es2020.symbol.wellknown.d.ts"],
["es2020.intl", "lib.es2020.intl.d.ts"],
["es2020.number", "lib.es2020.number.d.ts"],
["es2021.promise", "lib.es2021.promise.d.ts"],
["es2021.string", "lib.es2021.string.d.ts"],
["es2021.weakref", "lib.es2021.weakref.d.ts"],
["es2021.intl", "lib.es2021.intl.d.ts"],
["es2022.array", "lib.es2022.array.d.ts"],
["es2022.error", "lib.es2022.error.d.ts"],
["es2022.intl", "lib.es2022.intl.d.ts"],
["es2022.object", "lib.es2022.object.d.ts"],
["es2022.sharedmemory", "lib.es2022.sharedmemory.d.ts"],
["es2022.string", "lib.es2022.string.d.ts"],
["esnext.array", "lib.es2022.array.d.ts"],
["esnext.symbol", "lib.es2019.symbol.d.ts"],
["esnext.asynciterable", "lib.es2018.asynciterable.d.ts"],
["esnext.intl", "lib.esnext.intl.d.ts"],
["esnext.bigint", "lib.es2020.bigint.d.ts"],
["esnext.string", "lib.es2022.string.d.ts"],
["esnext.promise", "lib.es2021.promise.d.ts"],
["esnext.weakref", "lib.es2021.weakref.d.ts"]
];
/**
* An array of supported "lib" reference file names used to determine the order for inclusion
* when referenced, as well as for spelling suggestions. This ensures the correct ordering for
* overload resolution when a type declared in one lib is extended by another.
*
* @internal
*/
export const libs = libEntries.map(entry => entry[0]);
/**
* A map of lib names to lib files. This map is used both for parsing the "lib" command line
* option as well as for resolving lib reference directives.
*
* @internal
*/
export const libMap = new Map(libEntries);
// Watch related options
/** @internal */
export const optionsForWatch: CommandLineOption[] = [
{
name: "watchFile",
type: new Map(getEntries({
fixedpollinginterval: WatchFileKind.FixedPollingInterval,
prioritypollinginterval: WatchFileKind.PriorityPollingInterval,
dynamicprioritypolling: WatchFileKind.DynamicPriorityPolling,
fixedchunksizepolling: WatchFileKind.FixedChunkSizePolling,
usefsevents: WatchFileKind.UseFsEvents,
usefseventsonparentdirectory: WatchFileKind.UseFsEventsOnParentDirectory,
})),
category: Diagnostics.Watch_and_Build_Modes,
description: Diagnostics.Specify_how_the_TypeScript_watch_mode_works,
defaultValueDescription: WatchFileKind.UseFsEvents,
},
{
name: "watchDirectory",
type: new Map(getEntries({
usefsevents: WatchDirectoryKind.UseFsEvents,
fixedpollinginterval: WatchDirectoryKind.FixedPollingInterval,
dynamicprioritypolling: WatchDirectoryKind.DynamicPriorityPolling,
fixedchunksizepolling: WatchDirectoryKind.FixedChunkSizePolling,
})),
category: Diagnostics.Watch_and_Build_Modes,
description: Diagnostics.Specify_how_directories_are_watched_on_systems_that_lack_recursive_file_watching_functionality,
defaultValueDescription: WatchDirectoryKind.UseFsEvents,
},
{
name: "fallbackPolling",
type: new Map(getEntries({
fixedinterval: PollingWatchKind.FixedInterval,
priorityinterval: PollingWatchKind.PriorityInterval,
dynamicpriority: PollingWatchKind.DynamicPriority,
fixedchunksize: PollingWatchKind.FixedChunkSize,
})),
category: Diagnostics.Watch_and_Build_Modes,
description: Diagnostics.Specify_what_approach_the_watcher_should_use_if_the_system_runs_out_of_native_file_watchers,
defaultValueDescription: PollingWatchKind.PriorityInterval,
},
{
name: "synchronousWatchDirectory",
type: "boolean",
category: Diagnostics.Watch_and_Build_Modes,
description: Diagnostics.Synchronously_call_callbacks_and_update_the_state_of_directory_watchers_on_platforms_that_don_t_support_recursive_watching_natively,
defaultValueDescription: false,
},
{
name: "excludeDirectories",
type: "list",
element: {
name: "excludeDirectory",
type: "string",
isFilePath: true,
extraValidation: specToDiagnostic
},
category: Diagnostics.Watch_and_Build_Modes,
description: Diagnostics.Remove_a_list_of_directories_from_the_watch_process,
},
{
name: "excludeFiles",
type: "list",
element: {
name: "excludeFile",
type: "string",
isFilePath: true,
extraValidation: specToDiagnostic
},
category: Diagnostics.Watch_and_Build_Modes,
description: Diagnostics.Remove_a_list_of_files_from_the_watch_mode_s_processing,
},
];
/** @internal */
export const commonOptionsWithBuild: CommandLineOption[] = [
{
name: "help",
shortName: "h",
type: "boolean",
showInSimplifiedHelpView: true,
isCommandLineOnly: true,
category: Diagnostics.Command_line_Options,
description: Diagnostics.Print_this_message,
defaultValueDescription: false,
},
{
name: "help",
shortName: "?",
type: "boolean",
isCommandLineOnly: true,
category: Diagnostics.Command_line_Options,
defaultValueDescription: false,
},
{
name: "watch",
shortName: "w",
type: "boolean",
showInSimplifiedHelpView: true,
isCommandLineOnly: true,
category: Diagnostics.Command_line_Options,
description: Diagnostics.Watch_input_files,
defaultValueDescription: false,
},
{
name: "preserveWatchOutput",
type: "boolean",
showInSimplifiedHelpView: false,
category: Diagnostics.Output_Formatting,
description: Diagnostics.Disable_wiping_the_console_in_watch_mode,
defaultValueDescription: false,
},
{
name: "listFiles",
type: "boolean",
category: Diagnostics.Compiler_Diagnostics,
description: Diagnostics.Print_all_of_the_files_read_during_the_compilation,
defaultValueDescription: false,
},
{
name: "explainFiles",
type: "boolean",
category: Diagnostics.Compiler_Diagnostics,
description: Diagnostics.Print_files_read_during_the_compilation_including_why_it_was_included,
defaultValueDescription: false,
},
{
name: "listEmittedFiles",
type: "boolean",
category: Diagnostics.Compiler_Diagnostics,
description: Diagnostics.Print_the_names_of_emitted_files_after_a_compilation,
defaultValueDescription: false,
},
{
name: "pretty",
type: "boolean",
showInSimplifiedHelpView: true,
category: Diagnostics.Output_Formatting,
description: Diagnostics.Enable_color_and_formatting_in_TypeScript_s_output_to_make_compiler_errors_easier_to_read,
defaultValueDescription: true,
},
{
name: "traceResolution",
type: "boolean",
category: Diagnostics.Compiler_Diagnostics,
description: Diagnostics.Log_paths_used_during_the_moduleResolution_process,
defaultValueDescription: false,
},
{
name: "diagnostics",
type: "boolean",
category: Diagnostics.Compiler_Diagnostics,
description: Diagnostics.Output_compiler_performance_information_after_building,
defaultValueDescription: false,
},
{
name: "extendedDiagnostics",
type: "boolean",
category: Diagnostics.Compiler_Diagnostics,
description: Diagnostics.Output_more_detailed_compiler_performance_information_after_building,
defaultValueDescription: false,
},
{
name: "generateCpuProfile",
type: "string",
isFilePath: true,
paramType: Diagnostics.FILE_OR_DIRECTORY,
category: Diagnostics.Compiler_Diagnostics,
description: Diagnostics.Emit_a_v8_CPU_profile_of_the_compiler_run_for_debugging,
defaultValueDescription: "profile.cpuprofile"
},
{
name: "generateTrace",
type: "string",
isFilePath: true,
isCommandLineOnly: true,
paramType: Diagnostics.DIRECTORY,
category: Diagnostics.Compiler_Diagnostics,
description: Diagnostics.Generates_an_event_trace_and_a_list_of_types
},
{
name: "incremental",
shortName: "i",
type: "boolean",
category: Diagnostics.Projects,
description: Diagnostics.Save_tsbuildinfo_files_to_allow_for_incremental_compilation_of_projects,
transpileOptionValue: undefined,
defaultValueDescription: Diagnostics.false_unless_composite_is_set
},
{
name: "declaration",
shortName: "d",
type: "boolean",
// Not setting affectsEmit because we calculate this flag might not affect full emit
affectsBuildInfo: true,
showInSimplifiedHelpView: true,
category: Diagnostics.Emit,
transpileOptionValue: undefined,
description: Diagnostics.Generate_d_ts_files_from_TypeScript_and_JavaScript_files_in_your_project,
defaultValueDescription: Diagnostics.false_unless_composite_is_set,
},
{
name: "declarationMap",
type: "boolean",
// Not setting affectsEmit because we calculate this flag might not affect full emit
affectsBuildInfo: true,
showInSimplifiedHelpView: true,
category: Diagnostics.Emit,
transpileOptionValue: undefined,
defaultValueDescription: false,
description: Diagnostics.Create_sourcemaps_for_d_ts_files
},
{
name: "emitDeclarationOnly",
type: "boolean",
// Not setting affectsEmit because we calculate this flag might not affect full emit
affectsBuildInfo: true,
showInSimplifiedHelpView: true,
category: Diagnostics.Emit,
description: Diagnostics.Only_output_d_ts_files_and_not_JavaScript_files,
transpileOptionValue: undefined,
defaultValueDescription: false,
},
{
name: "sourceMap",
type: "boolean",
// Not setting affectsEmit because we calculate this flag might not affect full emit
affectsBuildInfo: true,
showInSimplifiedHelpView: true,
category: Diagnostics.Emit,
defaultValueDescription: false,
description: Diagnostics.Create_source_map_files_for_emitted_JavaScript_files,
},
{
name: "inlineSourceMap",
type: "boolean",
// Not setting affectsEmit because we calculate this flag might not affect full emit
affectsBuildInfo: true,
category: Diagnostics.Emit,
description: Diagnostics.Include_sourcemap_files_inside_the_emitted_JavaScript,
defaultValueDescription: false,
},
{
name: "assumeChangesOnlyAffectDirectDependencies",
type: "boolean",
affectsSemanticDiagnostics: true,
affectsEmit: true,
affectsBuildInfo: true,
category: Diagnostics.Watch_and_Build_Modes,
description: Diagnostics.Have_recompiles_in_projects_that_use_incremental_and_watch_mode_assume_that_changes_within_a_file_will_only_affect_files_directly_depending_on_it,
defaultValueDescription: false,
},
{
name: "locale",
type: "string",
category: Diagnostics.Command_line_Options,
isCommandLineOnly: true,
description: Diagnostics.Set_the_language_of_the_messaging_from_TypeScript_This_does_not_affect_emit,
defaultValueDescription: Diagnostics.Platform_specific
},
];
/** @internal */
export const targetOptionDeclaration: CommandLineOptionOfCustomType = {
name: "target",
shortName: "t",
type: new Map(getEntries({
es3: ScriptTarget.ES3,
es5: ScriptTarget.ES5,
es6: ScriptTarget.ES2015,
es2015: ScriptTarget.ES2015,
es2016: ScriptTarget.ES2016,
es2017: ScriptTarget.ES2017,
es2018: ScriptTarget.ES2018,
es2019: ScriptTarget.ES2019,
es2020: ScriptTarget.ES2020,
es2021: ScriptTarget.ES2021,
es2022: ScriptTarget.ES2022,
esnext: ScriptTarget.ESNext,
})),
affectsSourceFile: true,
affectsModuleResolution: true,
affectsEmit: true,
affectsBuildInfo: true,
paramType: Diagnostics.VERSION,
showInSimplifiedHelpView: true,
category: Diagnostics.Language_and_Environment,
description: Diagnostics.Set_the_JavaScript_language_version_for_emitted_JavaScript_and_include_compatible_library_declarations,
defaultValueDescription: ScriptTarget.ES3,
};
/** @internal */
export const moduleOptionDeclaration: CommandLineOptionOfCustomType = {
name: "module",
shortName: "m",
type: new Map(getEntries({
none: ModuleKind.None,
commonjs: ModuleKind.CommonJS,
amd: ModuleKind.AMD,
system: ModuleKind.System,
umd: ModuleKind.UMD,
es6: ModuleKind.ES2015,
es2015: ModuleKind.ES2015,
es2020: ModuleKind.ES2020,
es2022: ModuleKind.ES2022,
esnext: ModuleKind.ESNext,
node16: ModuleKind.Node16,
nodenext: ModuleKind.NodeNext,
})),
affectsModuleResolution: true,
affectsEmit: true,
affectsBuildInfo: true,
paramType: Diagnostics.KIND,
showInSimplifiedHelpView: true,
category: Diagnostics.Modules,
description: Diagnostics.Specify_what_module_code_is_generated,
defaultValueDescription: undefined,
};
const commandOptionsWithoutBuild: CommandLineOption[] = [
// CommandLine only options
{
name: "all",
type: "boolean",
showInSimplifiedHelpView: true,
category: Diagnostics.Command_line_Options,
description: Diagnostics.Show_all_compiler_options,
defaultValueDescription: false,
},
{
name: "version",
shortName: "v",
type: "boolean",
showInSimplifiedHelpView: true,
category: Diagnostics.Command_line_Options,
description: Diagnostics.Print_the_compiler_s_version,
defaultValueDescription: false,
},
{
name: "init",
type: "boolean",
showInSimplifiedHelpView: true,
category: Diagnostics.Command_line_Options,
description: Diagnostics.Initializes_a_TypeScript_project_and_creates_a_tsconfig_json_file,
defaultValueDescription: false,
},
{
name: "project",
shortName: "p",
type: "string",
isFilePath: true,
showInSimplifiedHelpView: true,
category: Diagnostics.Command_line_Options,
paramType: Diagnostics.FILE_OR_DIRECTORY,
description: Diagnostics.Compile_the_project_given_the_path_to_its_configuration_file_or_to_a_folder_with_a_tsconfig_json,
},
{
name: "build",
type: "boolean",
shortName: "b",
showInSimplifiedHelpView: true,
category: Diagnostics.Command_line_Options,
description: Diagnostics.Build_one_or_more_projects_and_their_dependencies_if_out_of_date,
defaultValueDescription: false,
},
{
name: "showConfig",
type: "boolean",
showInSimplifiedHelpView: true,
category: Diagnostics.Command_line_Options,
isCommandLineOnly: true,
description: Diagnostics.Print_the_final_configuration_instead_of_building,
defaultValueDescription: false,
},
{
name: "listFilesOnly",
type: "boolean",
category: Diagnostics.Command_line_Options,
isCommandLineOnly: true,
description: Diagnostics.Print_names_of_files_that_are_part_of_the_compilation_and_then_stop_processing,
defaultValueDescription: false,
},
// Basic
targetOptionDeclaration,
moduleOptionDeclaration,
{
name: "lib",
type: "list",
element: {
name: "lib",
type: libMap,
defaultValueDescription: undefined,
},
affectsProgramStructure: true,
showInSimplifiedHelpView: true,
category: Diagnostics.Language_and_Environment,
description: Diagnostics.Specify_a_set_of_bundled_library_declaration_files_that_describe_the_target_runtime_environment,
transpileOptionValue: undefined
},
{
name: "allowJs",
type: "boolean",
affectsModuleResolution: true,
showInSimplifiedHelpView: true,
category: Diagnostics.JavaScript_Support,
description: Diagnostics.Allow_JavaScript_files_to_be_a_part_of_your_program_Use_the_checkJS_option_to_get_errors_from_these_files,
defaultValueDescription: false,
},
{
name: "checkJs",
type: "boolean",
showInSimplifiedHelpView: true,
category: Diagnostics.JavaScript_Support,
description: Diagnostics.Enable_error_reporting_in_type_checked_JavaScript_files,
defaultValueDescription: false,
},
{
name: "jsx",
type: jsxOptionMap,
affectsSourceFile: true,
affectsEmit: true,
affectsBuildInfo: true,
affectsModuleResolution: true,
paramType: Diagnostics.KIND,
showInSimplifiedHelpView: true,
category: Diagnostics.Language_and_Environment,
description: Diagnostics.Specify_what_JSX_code_is_generated,
defaultValueDescription: undefined,
},
{
name: "outFile",
type: "string",
affectsEmit: true,
affectsBuildInfo: true,
affectsDeclarationPath: true,
isFilePath: true,
paramType: Diagnostics.FILE,
showInSimplifiedHelpView: true,
category: Diagnostics.Emit,
description: Diagnostics.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,
transpileOptionValue: undefined,
},
{
name: "outDir",
type: "string",
affectsEmit: true,
affectsBuildInfo: true,
affectsDeclarationPath: true,
isFilePath: true,
paramType: Diagnostics.DIRECTORY,
showInSimplifiedHelpView: true,
category: Diagnostics.Emit,
description: Diagnostics.Specify_an_output_folder_for_all_emitted_files,
},
{
name: "rootDir",
type: "string",
affectsEmit: true,
affectsBuildInfo: true,
affectsDeclarationPath: true,
isFilePath: true,
paramType: Diagnostics.LOCATION,
category: Diagnostics.Modules,
description: Diagnostics.Specify_the_root_folder_within_your_source_files,
defaultValueDescription: Diagnostics.Computed_from_the_list_of_input_files
},
{
name: "composite",
type: "boolean",
// Not setting affectsEmit because we calculate this flag might not affect full emit
affectsBuildInfo: true,
isTSConfigOnly: true,
category: Diagnostics.Projects,
transpileOptionValue: undefined,
defaultValueDescription: false,
description: Diagnostics.Enable_constraints_that_allow_a_TypeScript_project_to_be_used_with_project_references,
},
{
name: "tsBuildInfoFile",
type: "string",
affectsEmit: true,
affectsBuildInfo: true,
isFilePath: true,
paramType: Diagnostics.FILE,
category: Diagnostics.Projects,
transpileOptionValue: undefined,
defaultValueDescription: ".tsbuildinfo",
description: Diagnostics.Specify_the_path_to_tsbuildinfo_incremental_compilation_file,
},
{
name: "removeComments",
type: "boolean",
affectsEmit: true,
affectsBuildInfo: true,
showInSimplifiedHelpView: true,
category: Diagnostics.Emit,
defaultValueDescription: false,
description: Diagnostics.Disable_emitting_comments,
},
{
name: "noEmit",
type: "boolean",
showInSimplifiedHelpView: true,
category: Diagnostics.Emit,
description: Diagnostics.Disable_emitting_files_from_a_compilation,
transpileOptionValue: undefined,
defaultValueDescription: false,
},
{
name: "importHelpers",
type: "boolean",
affectsEmit: true,
affectsBuildInfo: true,
category: Diagnostics.Emit,
description: Diagnostics.Allow_importing_helper_functions_from_tslib_once_per_project_instead_of_including_them_per_file,
defaultValueDescription: false,
},
{
name: "importsNotUsedAsValues",
type: new Map(getEntries({
remove: ImportsNotUsedAsValues.Remove,
preserve: ImportsNotUsedAsValues.Preserve,
error: ImportsNotUsedAsValues.Error,
})),
affectsEmit: true,
affectsSemanticDiagnostics: true,
affectsBuildInfo: true,
category: Diagnostics.Emit,
description: Diagnostics.Specify_emit_Slashchecking_behavior_for_imports_that_are_only_used_for_types,
defaultValueDescription: ImportsNotUsedAsValues.Remove,
},
{
name: "downlevelIteration",
type: "boolean",
affectsEmit: true,
affectsBuildInfo: true,
category: Diagnostics.Emit,
description: Diagnostics.Emit_more_compliant_but_verbose_and_less_performant_JavaScript_for_iteration,
defaultValueDescription: false,
},
{
name: "isolatedModules",
type: "boolean",
category: Diagnostics.Interop_Constraints,
description: Diagnostics.Ensure_that_each_file_can_be_safely_transpiled_without_relying_on_other_imports,
transpileOptionValue: true,
defaultValueDescription: false,
},
// Strict Type Checks
{
name: "strict",
type: "boolean",
// Though this affects semantic diagnostics, affectsSemanticDiagnostics is not set here
// The value of each strictFlag depends on own strictFlag value or this and never accessed directly.
// But we need to store `strict` in builf info, even though it won't be examined directly, so that the
// flags it controls (e.g. `strictNullChecks`) will be retrieved correctly
affectsBuildInfo: true,
showInSimplifiedHelpView: true,
category: Diagnostics.Type_Checking,
description: Diagnostics.Enable_all_strict_type_checking_options,
defaultValueDescription: false,
},
{
name: "noImplicitAny",
type: "boolean",
affectsSemanticDiagnostics: true,
affectsBuildInfo: true,
strictFlag: true,
category: Diagnostics.Type_Checking,
description: Diagnostics.Enable_error_reporting_for_expressions_and_declarations_with_an_implied_any_type,
defaultValueDescription: Diagnostics.false_unless_strict_is_set
},
{
name: "strictNullChecks",
type: "boolean",
affectsSemanticDiagnostics: true,
affectsBuildInfo: true,
strictFlag: true,
category: Diagnostics.Type_Checking,
description: Diagnostics.When_type_checking_take_into_account_null_and_undefined,
defaultValueDescription: Diagnostics.false_unless_strict_is_set
},
{
name: "strictFunctionTypes",
type: "boolean",
affectsSemanticDiagnostics: true,
affectsBuildInfo: true,
strictFlag: true,
category: Diagnostics.Type_Checking,
description: Diagnostics.When_assigning_functions_check_to_ensure_parameters_and_the_return_values_are_subtype_compatible,
defaultValueDescription: Diagnostics.false_unless_strict_is_set
},
{
name: "strictBindCallApply",
type: "boolean",
affectsSemanticDiagnostics: true,
affectsBuildInfo: true,
strictFlag: true,
category: Diagnostics.Type_Checking,
description: Diagnostics.Check_that_the_arguments_for_bind_call_and_apply_methods_match_the_original_function,
defaultValueDescription: Diagnostics.false_unless_strict_is_set
},
{
name: "strictPropertyInitialization",
type: "boolean",
affectsSemanticDiagnostics: true,
affectsBuildInfo: true,
strictFlag: true,
category: Diagnostics.Type_Checking,
description: Diagnostics.Check_for_class_properties_that_are_declared_but_not_set_in_the_constructor,
defaultValueDescription: Diagnostics.false_unless_strict_is_set
},
{
name: "noImplicitThis",
type: "boolean",
affectsSemanticDiagnostics: true,
affectsBuildInfo: true,
strictFlag: true,
category: Diagnostics.Type_Checking,
description: Diagnostics.Enable_error_reporting_when_this_is_given_the_type_any,
defaultValueDescription: Diagnostics.false_unless_strict_is_set
},
{
name: "useUnknownInCatchVariables",
type: "boolean",
affectsSemanticDiagnostics: true,
affectsBuildInfo: true,
strictFlag: true,
category: Diagnostics.Type_Checking,
description: Diagnostics.Default_catch_clause_variables_as_unknown_instead_of_any,
defaultValueDescription: false,
},
{
name: "alwaysStrict",
type: "boolean",
affectsSourceFile: true,
affectsEmit: true,
affectsBuildInfo: true,
strictFlag: true,
category: Diagnostics.Type_Checking,
description: Diagnostics.Ensure_use_strict_is_always_emitted,
defaultValueDescription: Diagnostics.false_unless_strict_is_set
},
// Additional Checks
{
name: "noUnusedLocals",
type: "boolean",
affectsSemanticDiagnostics: true,
affectsBuildInfo: true,
category: Diagnostics.Type_Checking,
description: Diagnostics.Enable_error_reporting_when_local_variables_aren_t_read,
defaultValueDescription: false,
},
{
name: "noUnusedParameters",
type: "boolean",
affectsSemanticDiagnostics: true,
affectsBuildInfo: true,
category: Diagnostics.Type_Checking,
description: Diagnostics.Raise_an_error_when_a_function_parameter_isn_t_read,
defaultValueDescription: false,
},
{
name: "exactOptionalPropertyTypes",
type: "boolean",
affectsSemanticDiagnostics: true,
affectsBuildInfo: true,
category: Diagnostics.Type_Checking,
description: Diagnostics.Interpret_optional_property_types_as_written_rather_than_adding_undefined,
defaultValueDescription: false,
},
{
name: "noImplicitReturns",
type: "boolean",
affectsSemanticDiagnostics: true,
affectsBuildInfo: true,
category: Diagnostics.Type_Checking,
description: Diagnostics.Enable_error_reporting_for_codepaths_that_do_not_explicitly_return_in_a_function,
defaultValueDescription: false,
},
{
name: "noFallthroughCasesInSwitch",
type: "boolean",
affectsBindDiagnostics: true,
affectsSemanticDiagnostics: true,
affectsBuildInfo: true,
category: Diagnostics.Type_Checking,
description: Diagnostics.Enable_error_reporting_for_fallthrough_cases_in_switch_statements,
defaultValueDescription: false,
},
{
name: "noUncheckedIndexedAccess",
type: "boolean",
affectsSemanticDiagnostics: true,
affectsBuildInfo: true,
category: Diagnostics.Type_Checking,
description: Diagnostics.Add_undefined_to_a_type_when_accessed_using_an_index,
defaultValueDescription: false,
},
{
name: "noImplicitOverride",
type: "boolean",
affectsSemanticDiagnostics: true,
affectsBuildInfo: true,
category: Diagnostics.Type_Checking,
description: Diagnostics.Ensure_overriding_members_in_derived_classes_are_marked_with_an_override_modifier,
defaultValueDescription: false,
},
{
name: "noPropertyAccessFromIndexSignature",
type: "boolean",
affectsSemanticDiagnostics: true,
affectsBuildInfo: true,
showInSimplifiedHelpView: false,
category: Diagnostics.Type_Checking,
description: Diagnostics.Enforces_using_indexed_accessors_for_keys_declared_using_an_indexed_type,
defaultValueDescription: false,
},
// Module Resolution
{
name: "moduleResolution",
type: new Map(getEntries({
node: ModuleResolutionKind.NodeJs,
classic: ModuleResolutionKind.Classic,
node16: ModuleResolutionKind.Node16,
nodenext: ModuleResolutionKind.NodeNext,
})),
affectsModuleResolution: true,
paramType: Diagnostics.STRATEGY,
category: Diagnostics.Modules,
description: Diagnostics.Specify_how_TypeScript_looks_up_a_file_from_a_given_module_specifier,
defaultValueDescription: Diagnostics.module_AMD_or_UMD_or_System_or_ES6_then_Classic_Otherwise_Node
},
{
name: "baseUrl",
type: "string",
affectsModuleResolution: true,
isFilePath: true,
category: Diagnostics.Modules,
description: Diagnostics.Specify_the_base_directory_to_resolve_non_relative_module_names
},
{
// this option can only be specified in tsconfig.json
// use type = object to copy the value as-is
name: "paths",
type: "object",
affectsModuleResolution: true,
isTSConfigOnly: true,
category: Diagnostics.Modules,
description: Diagnostics.Specify_a_set_of_entries_that_re_map_imports_to_additional_lookup_locations,
transpileOptionValue: undefined
},
{
// this option can only be specified in tsconfig.json
// use type = object to copy the value as-is
name: "rootDirs",
type: "list",
isTSConfigOnly: true,
element: {
name: "rootDirs",
type: "string",
isFilePath: true
},
affectsModuleResolution: true,
category: Diagnostics.Modules,
description: Diagnostics.Allow_multiple_folders_to_be_treated_as_one_when_resolving_modules,
transpileOptionValue: undefined,
defaultValueDescription: Diagnostics.Computed_from_the_list_of_input_files
},
{
name: "typeRoots",
type: "list",
element: {
name: "typeRoots",
type: "string",
isFilePath: true
},
affectsModuleResolution: true,
category: Diagnostics.Modules,
description: Diagnostics.Specify_multiple_folders_that_act_like_Slashnode_modules_Slash_types
},
{
name: "types",
type: "list",
element: {
name: "types",
type: "string"
},
affectsProgramStructure: true,
showInSimplifiedHelpView: true,
category: Diagnostics.Modules,
description: Diagnostics.Specify_type_package_names_to_be_included_without_being_referenced_in_a_source_file,
transpileOptionValue: undefined
},
{
name: "allowSyntheticDefaultImports",
type: "boolean",
affectsSemanticDiagnostics: true,
affectsBuildInfo: true,
category: Diagnostics.Interop_Constraints,
description: Diagnostics.Allow_import_x_from_y_when_a_module_doesn_t_have_a_default_export,
defaultValueDescription: Diagnostics.module_system_or_esModuleInterop
},
{
name: "esModuleInterop",
type: "boolean",
affectsSemanticDiagnostics: true,
affectsEmit: true,
affectsBuildInfo: true,
showInSimplifiedHelpView: true,
category: Diagnostics.Interop_Constraints,
description: Diagnostics.Emit_additional_JavaScript_to_ease_support_for_importing_CommonJS_modules_This_enables_allowSyntheticDefaultImports_for_type_compatibility,
defaultValueDescription: false,
},
{
name: "preserveSymlinks",
type: "boolean",
category: Diagnostics.Interop_Constraints,
description: Diagnostics.Disable_resolving_symlinks_to_their_realpath_This_correlates_to_the_same_flag_in_node,
defaultValueDescription: false,
},
{
name: "allowUmdGlobalAccess",
type: "boolean",
affectsSemanticDiagnostics: true,
affectsBuildInfo: true,
category: Diagnostics.Modules,
description: Diagnostics.Allow_accessing_UMD_globals_from_modules,
defaultValueDescription: false,
},
{
name: "moduleSuffixes",
type: "list",
element: {
name: "suffix",
type: "string",
},
listPreserveFalsyValues: true,
affectsModuleResolution: true,
category: Diagnostics.Modules,
description: Diagnostics.List_of_file_name_suffixes_to_search_when_resolving_a_module,
},
// Source Maps
{
name: "sourceRoot",
type: "string",
affectsEmit: true,
affectsBuildInfo: true,
paramType: Diagnostics.LOCATION,
category: Diagnostics.Emit,
description: Diagnostics.Specify_the_root_path_for_debuggers_to_find_the_reference_source_code,
},
{
name: "mapRoot",
type: "string",
affectsEmit: true,
affectsBuildInfo: true,
paramType: Diagnostics.LOCATION,
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