Returns the module resolution cache used by a provided resolveModuleNames implementation so that any non-name module resolution operations (eg, package.json lookup) can reuse it

getParsedCommandLine

abstract val getParsedCommandLine: (fileName: String) -> ParsedCommandLine??

If provided, use this method to get parsed command lines for referenced projects

hasInvalidatedResolutions

abstract val hasInvalidatedResolutions: (Path) -> Boolean?

If provided along with custom resolveModuleNames or resolveTypeReferenceDirectives, used to determine if unchanged file path needs to re-resolve modules/type reference directives

jsDocParsingMode

abstract var jsDocParsingMode: JSDocParsingMode?

onWatchStatusChange

abstract val onWatchStatusChange: (diagnostic: Diagnostic, newLine: String, options: CompilerOptions, errorCount: Double?) -> Unit?

If provided, called with Diagnostic message that informs about change in watch status

readDirectory

abstract val readDirectory: (path: String, ReadonlyArray<String>?, ReadonlyArray<String>?, ReadonlyArray<String>?, depth: Double?) -> ReadonlyArray<String>?

If provided, used to cache and handle directory structure modifications

realpath

abstract val realpath: (path: String) -> String?

Symbol links resolution

resolveModuleNameLiterals

abstract val resolveModuleNameLiterals: (ReadonlyArray<StringLiteralLike>, containingFile: String, redirectedReference: ResolvedProjectReference?, options: CompilerOptions, containingSourceFile: SourceFile, ReadonlyArray<StringLiteralLike>?) -> ReadonlyArray<ResolvedModuleWithFailedLookupLocations>?

resolveModuleNames

abstract val resolveModuleNames: (ReadonlyArray<String>, containingFile: String, ReadonlyArray<String>?, redirectedReference: ResolvedProjectReference?, options: CompilerOptions, containingSourceFile: SourceFile?) -> ReadonlyArray<ResolvedModule?>?

resolveTypeReferenceDirectiveReferences

abstract val resolveTypeReferenceDirectiveReferences: Function<Any?>?

resolveTypeReferenceDirectives

abstract val resolveTypeReferenceDirectives: (typeReferenceDirectiveNames: Any, containingFile: String, redirectedReference: ResolvedProjectReference?, options: CompilerOptions, ResolutionMode) -> ReadonlyArray<ResolvedTypeReferenceDirective?>?

setTimeout

abstract val setTimeout: Function<Any?>?

If provided, will be used to set delayed compilation, so that multiple changes in short span are compiled together

trace

abstract val trace: (s: String) -> Unit?

If provided would be used to write log about compilation

useSourceOfProjectReferenceRedirect

abstract val useSourceOfProjectReferenceRedirect: () -> Boolean?

Instead of using output d.ts file from project reference, use its source file

Functions

fileExists

abstract fun fileExists(path: String): Boolean

Use to check file presence for source files and if resolveModuleNames is not provided (complier is in charge of module resolution) then module files as well

getCurrentDirectory

abstract fun getCurrentDirectory(): String

getDefaultLibFileName

abstract fun getDefaultLibFileName(options: CompilerOptions): String

getNewLine

abstract fun getNewLine(): String

readFile

abstract fun readFile(path: String, encoding: String = definedExternally): String?

Use to read file text for source files and if resolveModuleNames is not provided (complier is in charge of module resolution) then module files as well

useCaseSensitiveFileNames

abstract fun useCaseSensitiveFileNames(): Boolean

watchDirectory

abstract fun watchDirectory(path: String, callback: DirectoryWatcherCallback, recursive: Boolean = definedExternally, options: WatchOptions = definedExternally): FileWatcher

Used to watch resolved module's failed lookup locations, config file specs, type roots where auto type reference directives are added

watchFile

abstract fun watchFile(path: String, callback: FileWatcherCallback, pollingInterval: Double = definedExternally, options: WatchOptions = definedExternally): FileWatcher

Used to watch changes in source files, missing files needed to update the program or config file