{ "jsonrpc": "2.0", "method": "textDocument/didOpen", "params": { "textDocument": { "uri": "file:///a/file.ts", "languageId": "javascript", "version": 1, "text": "// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.\n\n// @ts-check\n/// <reference path=\"./compiler.d.ts\" />\n// deno-lint-ignore-file no-undef\n\n// This module is the entry point for \"compiler\" isolate, ie. the one\n// that is created when Deno needs to type check TypeScript, and in some\n// instances convert TypeScript to JavaScript.\n\n// Removes the `__proto__` for security reasons. This intentionally makes\n// Deno non compliant with ECMA-262 Annex B.2.2.1\ndelete Object.prototype.__proto__;\n\n((window) => {\n /** @type {DenoCore} */\n const core = window.Deno.core;\n\n let logDebug = false;\n let logSource = \"JS\";\n\n function setLogDebug(debug, source) {\n logDebug = debug;\n if (source) {\n logSource = source;\n }\n }\n\n function debug(...args) {\n if (logDebug) {\n const stringifiedArgs = args.map((arg) =>\n typeof arg === \"string\" ? arg : JSON.stringify(arg)\n ).join(\" \");\n // adding a non-zero integer value to the end of the debug string causes\n // the message to be printed to stderr instead of stdout, which is better\n // aligned to the behaviour of debug messages\n core.print(`DEBUG ${logSource} - ${stringifiedArgs}\\n`, 1);\n }\n }\n\n function error(...args) {\n const stringifiedArgs = args.map((arg) =>\n typeof arg === \"string\" || arg instanceof Error\n ? String(arg)\n : JSON.stringify(arg)\n ).join(\" \");\n core.print(`ERROR ${logSource} = ${stringifiedArgs}\\n`, 1);\n }\n\n class AssertionError extends Error {\n constructor(msg) {\n super(msg);\n this.name = \"AssertionError\";\n }\n }\n\n function assert(cond, msg = \"Assertion failed.\") {\n if (!cond) {\n throw new AssertionError(msg);\n }\n }\n\n /** @type {Map<string, ts.SourceFile>} */\n const sourceFileCache = new Map();\n\n /** @param {ts.DiagnosticRelatedInformation} diagnostic */\n function fromRelatedInformation({\n start,\n length,\n file,\n messageText: msgText,\n ...ri\n }) {\n let messageText;\n let messageChain;\n if (typeof msgText === \"object\") {\n messageChain = msgText;\n } else {\n messageText = msgText;\n }\n if (start !== undefined && length !== undefined && file) {\n const startPos = file.getLineAndCharacterOfPosition(start);\n const sourceLine = file.getFullText().split(\"\\n\")[startPos.line];\n const fileName = file.fileName;\n return {\n start: startPos,\n end: file.getLineAndCharacterOfPosition(start + length),\n fileName,\n messageChain,\n messageText,\n sourceLine,\n ...ri,\n };\n } else {\n return {\n messageChain,\n messageText,\n ...ri,\n };\n }\n }\n\n /** @param {ts.Diagnostic[]} diagnostics */\n function fromTypeScriptDiagnostic(diagnostics) {\n return diagnostics.map(({ relatedInformation: ri, source, ...diag }) => {\n /** @type {any} */\n const value = fromRelatedInformation(diag);\n value.relatedInformation = ri\n ? ri.map(fromRelatedInformation)\n : undefined;\n value.source = source;\n return value;\n });\n }\n\n // Using incremental compile APIs requires that all\n // paths must be either relative or absolute. Since\n // analysis in Rust operates on fully resolved URLs,\n // it makes sense to use the same scheme here.\n const ASSETS = \"asset:///\";\n const CACHE = \"cache:///\";\n\n /** Diagnostics that are intentionally ignored when compiling TypeScript in\n * Deno, as they provide misleading or incorrect information. */\n const IGNORED_DIAGNOSTICS = [\n // TS1208: All files must be modules when the '--isolatedModules' flag is\n // provided. We can ignore because we guarantee that all files are\n // modules.\n 1208,\n // TS1375: 'await' expressions are only allowed at the top level of a file\n // when that file is a module, but this file has no imports or exports.\n // Consider adding an empty 'export {}' to make this file a module.\n 1375,\n // TS1103: 'for-await-of' statement is only allowed within an async function\n // or async generator.\n 1103,\n // TS2306: File 'file:///Users/rld/src/deno/cli/tests/subdir/amd_like.js' is\n // not a module.\n 2306,\n // TS2691: An import path cannot end with a '.ts' extension. Consider\n // importing 'bad-module' instead.\n 2691,\n // TS2792: Cannot find module. Did you mean to set the 'moduleResolution'\n // option to 'node', or to add aliases to the 'paths' option?\n 2792,\n // TS5009: Cannot find the common subdirectory path for the input files.\n 5009,\n // TS5055: Cannot write file\n // 'http://localhost:4545/cli/tests/subdir/mt_application_x_javascript.j4.js'\n // because it would overwrite input file.\n 5055,\n // TypeScript is overly opinionated that only CommonJS modules kinds can\n // support JSON imports. Allegedly this was fixed in\n // Microsoft/TypeScript#26825 but that doesn't seem to be working here,\n // so we will ignore complaints about this compiler setting.\n 5070,\n // TS7016: Could not find a declaration file for module '...'. '...'\n // implicitly has an 'any' type. This is due to `allowJs` being off by\n // default but importing of a JavaScript module.\n 7016,\n ];\n\n const SNAPSHOT_COMPILE_OPTIONS = {\n esModuleInterop: true,\n jsx: ts.JsxEmit.React,\n module: ts.ModuleKind.ESNext,\n noEmit: true,\n strict: true,\n target: ts.ScriptTarget.ESNext,\n };\n\n class ScriptSnapshot {\n /** @type {string} */\n specifier;\n /** @type {string} */\n version;\n /**\n * @param {string} specifier\n * @param {string} version \n */\n constructor(specifier, version) {\n this.specifier = specifier;\n this.version = version;\n }\n /**\n * @param {number} start \n * @param {number} end \n * @returns {string}\n */\n getText(start, end) {\n const { specifier, version } = this;\n debug(\n `snapshot.getText(${start}, ${end}) specifier: ${specifier} version: ${version}`,\n );\n return core.jsonOpSync(\"op_get_text\", { specifier, version, start, end });\n }\n /**\n * @returns {number}\n */\n getLength() {\n const { specifier, version } = this;\n debug(`snapshot.getLength() specifier: ${specifier} version: ${version}`);\n return core.jsonOpSync(\"op_get_length\", { specifier, version });\n }\n /**\n * @param {ScriptSnapshot} oldSnapshot\n * @returns {ts.TextChangeRange | undefined}\n */\n getChangeRange(oldSnapshot) {\n const { specifier, version } = this;\n const { version: oldVersion } = oldSnapshot;\n const oldLength = oldSnapshot.getLength();\n debug(\n `snapshot.getLength() specifier: ${specifier} oldVersion: ${oldVersion} version: ${version}`,\n );\n return core.jsonOpSync(\n \"op_get_change_range\",\n { specifier, oldLength, oldVersion, version },\n );\n }\n dispose() {\n const { specifier, version } = this;\n debug(`snapshot.dispose() specifier: ${specifier} version: ${version}`);\n core.jsonOpSync(\"op_dispose\", { specifier, version });\n }\n }\n\n /** @type {ts.CompilerOptions} */\n let compilationSettings = {};\n\n /** @type {ts.LanguageService} */\n let languageService;\n\n /** An object literal of the incremental compiler host, which provides the\n * specific \"bindings\" to the Deno environment that tsc needs to work.\n *\n * @type {ts.CompilerHost & ts.LanguageServiceHost} */\n const host = {\n fileExists(fileName) {\n debug(`host.fileExists(\"${fileName}\")`);\n return false;\n },\n readFile(specifier) {\n debug(`host.readFile(\"${specifier}\")`);\n return core.jsonOpSync(\"op_load\", { specifier }).data;\n },\n getSourceFile(\n specifier,\n languageVersion,\n _onError,\n _shouldCreateNewSourceFile,\n ) {\n debug(\n `host.getSourceFile(\"${specifier}\", ${\n ts.ScriptTarget[languageVersion]\n })`,\n );\n let sourceFile = sourceFileCache.get(specifier);\n if (sourceFile) {\n return sourceFile;\n }\n\n /** @type {{ data: string; hash?: string; scriptKind: ts.ScriptKind }} */\n const { data, hash, scriptKind } = core.jsonOpSync(\n \"op_load\",\n { specifier },\n );\n assert(\n data != null,\n `\"data\" is unexpectedly null for \"${specifier}\".`,\n );\n sourceFile = ts.createSourceFile(\n specifier,\n data,\n languageVersion,\n false,\n scriptKind,\n );\n sourceFile.moduleName = specifier;\n sourceFile.version = hash;\n sourceFileCache.set(specifier, sourceFile);\n return sourceFile;\n },\n getDefaultLibFileName() {\n return `${ASSETS}/lib.esnext.d.ts`;\n },\n getDefaultLibLocation() {\n return ASSETS;\n },\n writeFile(fileName, data, _writeByteOrderMark, _onError, sourceFiles) {\n debug(`host.writeFile(\"${fileName}\")`);\n let maybeSpecifiers;\n if (sourceFiles) {\n maybeSpecifiers = sourceFiles.map((sf) => sf.moduleName);\n }\n return core.jsonOpSync(\n \"op_emit\",\n { maybeSpecifiers, fileName, data },\n );\n },\n getCurrentDirectory() {\n return CACHE;\n },\n getCanonicalFileName(fileName) {\n return fileName;\n },\n useCaseSensitiveFileNames() {\n return true;\n },\n getNewLine() {\n return \"\\n\";\n },\n resolveModuleNames(specifiers, base) {\n debug(`host.resolveModuleNames()`);\n debug(` base: ${base}`);\n debug(` specifiers: ${specifiers.join(\", \")}`);\n /** @type {Array<[string, ts.Extension] | undefined>} */\n const resolved = core.jsonOpSync(\"op_resolve\", {\n specifiers,\n base,\n });\n if (resolved) {\n const result = resolved.map((item) => {\n if (item) {\n const [resolvedFileName, extension] = item;\n return {\n resolvedFileName,\n extension,\n isExternalLibraryImport: false,\n };\n }\n return undefined;\n });\n result.length = specifiers.length;\n return result;\n } else {\n return new Array(specifiers.length);\n }\n },\n createHash(data) {\n return core.jsonOpSync(\"op_create_hash\", { data }).hash;\n },\n\n // LanguageServiceHost\n getCompilationSettings() {\n debug(\"host.getCompilationSettings()\");\n return compilationSettings;\n },\n getScriptFileNames() {\n debug(\"host.getScriptFileNames()\");\n return core.jsonOpSync(\"op_script_names\", undefined);\n },\n getScriptVersion(specifier) {\n debug(`host.getScriptVersion(\"${specifier}\")`);\n const sourceFile = sourceFileCache.get(specifier);\n if (sourceFile) {\n return sourceFile.version ?? \"1\";\n }\n return core.jsonOpSync(\"op_script_version\", { specifier });\n },\n getScriptSnapshot(specifier) {\n debug(`host.getScriptSnapshot(\"${specifier}\")`);\n const sourceFile = sourceFileCache.get(specifier);\n if (sourceFile) {\n return {\n getText(start, end) {\n return sourceFile.text.substring(start, end);\n },\n getLength() {\n return sourceFile.text.length;\n },\n getChangeRange() {\n return undefined;\n },\n };\n }\n /** @type {string | undefined} */\n const version = core.jsonOpSync(\"op_script_version\", { specifier });\n if (version != null) {\n return new ScriptSnapshot(specifier, version);\n }\n return undefined;\n },\n };\n\n /** @type {Array<[string, number]>} */\n const stats = [];\n let statsStart = 0;\n\n function performanceStart() {\n stats.length = 0;\n statsStart = Date.now();\n ts.performance.enable();\n }\n\n /**\n * @param {{ program: ts.Program | ts.EmitAndSemanticDiagnosticsBuilderProgram, fileCount?: number }} options \n */\n function performanceProgram({ program, fileCount }) {\n if (program) {\n if (\"getProgram\" in program) {\n program = program.getProgram();\n }\n stats.push([\"Files\", program.getSourceFiles().length]);\n stats.push([\"Nodes\", program.getNodeCount()]);\n stats.push([\"Identifiers\", program.getIdentifierCount()]);\n stats.push([\"Symbols\", program.getSymbolCount()]);\n stats.push([\"Types\", program.getTypeCount()]);\n stats.push([\"Instantiations\", program.getInstantiationCount()]);\n } else if (fileCount != null) {\n stats.push([\"Files\", fileCount]);\n }\n const programTime = ts.performance.getDuration(\"Program\");\n const bindTime = ts.performance.getDuration(\"Bind\");\n const checkTime = ts.performance.getDuration(\"Check\");\n const emitTime = ts.performance.getDuration(\"Emit\");\n stats.push([\"Parse time\", programTime]);\n stats.push([\"Bind time\", bindTime]);\n stats.push([\"Check time\", checkTime]);\n stats.push([\"Emit time\", emitTime]);\n stats.push(\n [\"Total TS time\", programTime + bindTime + checkTime + emitTime],\n );\n }\n\n function performanceEnd() {\n const duration = Date.now() - statsStart;\n stats.push([\"Compile time\", duration]);\n return stats;\n }\n\n /**\n * @typedef {object} Request\n * @property {Record<string, any>} config\n * @property {boolean} debug\n * @property {string[]} rootNames\n */\n\n /** The API that is called by Rust when executing a request.\n * @param {Request} request\n */\n function exec({ config, debug: debugFlag, rootNames }) {\n setLogDebug(debugFlag, \"TS\");\n performanceStart();\n debug(\">>> exec start\", { rootNames });\n debug(config);\n\n const { options, errors: configFileParsingDiagnostics } = ts\n .convertCompilerOptionsFromJson(config, \"\");\n // The `allowNonTsExtensions` is a \"hidden\" compiler option used in VSCode\n // which is not allowed to be passed in JSON, we need it to allow special\n // URLs which Deno supports. So we need to either ignore the diagnostic, or\n // inject it ourselves.\n Object.assign(options, { allowNonTsExtensions: true });\n const program = ts.createIncrementalProgram({\n rootNames,\n options,\n host,\n configFileParsingDiagnostics,\n });\n\n const { diagnostics: emitDiagnostics } = program.emit();\n\n const diagnostics = [\n ...program.getConfigFileParsingDiagnostics(),\n ...program.getSyntacticDiagnostics(),\n ...program.getOptionsDiagnostics(),\n ...program.getGlobalDiagnostics(),\n ...program.getSemanticDiagnostics(),\n ...emitDiagnostics,\n ].filter(({ code }) => !IGNORED_DIAGNOSTICS.includes(code));\n performanceProgram({ program });\n\n core.jsonOpSync(\"op_respond\", {\n diagnostics: fromTypeScriptDiagnostic(diagnostics),\n stats: performanceEnd(),\n });\n debug(\"<<< exec stop\");\n }\n\n /**\n * @param {number} id \n * @param {any} data \n */\n function respond(id, data = null) {\n core.jsonOpSync(\"op_respond\", { id, data });\n }\n\n /**\n * @param {LanguageServerRequest} request \n */\n function serverRequest({ id, ...request }) {\n debug(`serverRequest()`, { id, ...request });\n switch (request.method) {\n case \"configure\": {\n const { options, errors } = ts\n .convertCompilerOptionsFromJson(request.compilerOptions, \"\");\n Object.assign(options, { allowNonTsExtensions: true });\n if (errors.length) {\n debug(ts.formatDiagnostics(errors, host));\n }\n compilationSettings = options;\n return respond(id, true);\n }\n case \"getAsset\": {\n const sourceFile = host.getSourceFile(\n request.specifier,\n ts.ScriptTarget.ESNext,\n );\n return respond(id, sourceFile && sourceFile.text);\n }\n case \"getDiagnostics\": {\n try {\n /** @type {Record<string, any[]>} */\n const diagnosticMap = {};\n for (const specifier of request.specifiers) {\n diagnosticMap[specifier] = fromTypeScriptDiagnostic([\n ...languageService.getSemanticDiagnostics(specifier),\n ...languageService.getSuggestionDiagnostics(specifier),\n ...languageService.getSyntacticDiagnostics(specifier),\n ].filter(({ code }) => !IGNORED_DIAGNOSTICS.includes(code)));\n }\n return respond(id, diagnosticMap);\n } catch (e) {\n if (\"stack\" in e) {\n error(e.stack);\n } else {\n error(e);\n }\n return respond(id, {});\n }\n }\n case \"getQuickInfo\": {\n return respond(\n id,\n languageService.getQuickInfoAtPosition(\n request.specifier,\n request.position,\n ),\n );\n }\n case \"getCompletions\": {\n return respond(\n id,\n languageService.getCompletionsAtPosition(\n request.specifier,\n request.position,\n request.preferences,\n ),\n );\n }\n case \"getDocumentHighlights\": {\n return respond(\n id,\n languageService.getDocumentHighlights(\n request.specifier,\n request.position,\n request.filesToSearch,\n ),\n );\n }\n case \"getReferences\": {\n return respond(\n id,\n languageService.getReferencesAtPosition(\n request.specifier,\n request.position,\n ),\n );\n }\n case \"getDefinition\": {\n return respond(\n id,\n languageService.getDefinitionAndBoundSpan(\n request.specifier,\n request.position,\n ),\n );\n }\n case \"getImplementation\": {\n return respond(\n id,\n languageService.getImplementationAtPosition(\n request.specifier,\n request.position,\n ),\n );\n }\n case \"findRenameLocations\": {\n return respond(\n id,\n languageService.findRenameLocations(\n request.specifier,\n request.position,\n request.findInStrings,\n request.findInComments,\n request.providePrefixAndSuffixTextForRename,\n ),\n );\n }\n default:\n throw new TypeError(\n // @ts-ignore exhausted case statement sets type to never\n `Invalid request method for request: \"${request.method}\" (${id})`,\n );\n }\n }\n\n /** @param {{ debug: boolean; }} init */\n function serverInit({ debug: debugFlag }) {\n if (hasStarted) {\n throw new Error(\"The language server has already been initialized.\");\n }\n hasStarted = true;\n languageService = ts.createLanguageService(host);\n core.ops();\n setLogDebug(debugFlag, \"TSLS\");\n debug(\"serverInit()\");\n }\n\n let hasStarted = false;\n\n /** Startup the runtime environment, setting various flags.\n * @param {{ debugFlag?: boolean; legacyFlag?: boolean; }} msg\n */\n function startup({ debugFlag = false }) {\n if (hasStarted) {\n throw new Error(\"The compiler runtime already started.\");\n }\n hasStarted = true;\n core.ops();\n setLogDebug(!!debugFlag, \"TS\");\n }\n\n // Setup the compiler runtime during the build process.\n core.ops();\n core.registerErrorClass(\"Error\", Error);\n\n // A build time only op that provides some setup information that is used to\n // ensure the snapshot is setup properly.\n /** @type {{ buildSpecifier: string; libs: string[] }} */\n const { buildSpecifier, libs } = core.jsonOpSync(\"op_build_info\", {});\n for (const lib of libs) {\n const specifier = `lib.${lib}.d.ts`;\n // we are using internal APIs here to \"inject\" our custom libraries into\n // tsc, so things like `\"lib\": [ \"deno.ns\" ]` are supported.\n if (!ts.libs.includes(lib)) {\n ts.libs.push(lib);\n ts.libMap.set(lib, `lib.${lib}.d.ts`);\n }\n // we are caching in memory common type libraries that will be re-used by\n // tsc on when the snapshot is restored\n assert(\n host.getSourceFile(`${ASSETS}${specifier}`, ts.ScriptTarget.ESNext),\n );\n }\n // this helps ensure as much as possible is in memory that is re-usable\n // before the snapshotting is done, which helps unsure fast \"startup\" for\n // subsequent uses of tsc in Deno.\n const TS_SNAPSHOT_PROGRAM = ts.createProgram({\n rootNames: [buildSpecifier],\n options: SNAPSHOT_COMPILE_OPTIONS,\n host,\n });\n ts.getPreEmitDiagnostics(TS_SNAPSHOT_PROGRAM);\n\n // exposes the two functions that are called by `tsc::exec()` when type\n // checking TypeScript.\n globalThis.startup = startup;\n globalThis.exec = exec;\n\n // exposes the functions that are called when the compiler is used as a\n // language service.\n globalThis.serverInit = serverInit;\n globalThis.serverRequest = serverRequest;\n})(this);\n" } }}