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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
import { path, ts } from "./mod.deps.ts";import { ScriptTarget } from "./types.ts";
export function outputDiagnostics(diagnostics: readonly ts.Diagnostic[]) {  const host: ts.FormatDiagnosticsHost = {    getCanonicalFileName: (fileName) => path.resolve(fileName),    getCurrentDirectory: () => Deno.cwd(),    getNewLine: () => "\n",  };  const output = Deno.noColor    ? ts.formatDiagnostics(diagnostics, host)    : ts.formatDiagnosticsWithColorAndContext(diagnostics, host);  console.error(output);}
export function getCompilerScriptTarget(target: ScriptTarget) {  switch (target) {    case "ES3":      return ts.ScriptTarget.ES3;    case "ES5":      return ts.ScriptTarget.ES5;    case "ES2015":      return ts.ScriptTarget.ES2015;    case "ES2016":      return ts.ScriptTarget.ES2016;    case "ES2017":      return ts.ScriptTarget.ES2017;    case "ES2018":      return ts.ScriptTarget.ES2018;    case "ES2019":      return ts.ScriptTarget.ES2019;    case "ES2020":      return ts.ScriptTarget.ES2020;    case "ES2021":      return ts.ScriptTarget.ES2021;    case "ES2022":      return ts.ScriptTarget.ES2022;    case "Latest":      return ts.ScriptTarget.Latest;    default:      throw new Error(`Unknown target compiler option: ${target}`);  }}
// Created from https://github.com/microsoft/TypeScript/blob/v5.2.2/src/compiler/commandLineParser.ts// then aligned with tsconfig.json's casingexport type LibName =  | "ES5"  | "ES6"  | "ES2015"  | "ES7"  | "ES2016"  | "ES2017"  | "ES2018"  | "ES2019"  | "ES2020"  | "ES2021"  | "ES2022"  | "ES2023"  | "ESNext"  | "DOM"  | "DOM.Iterable"  | "WebWorker"  | "WebWorker.ImportScripts"  | "WebWorker.Iterable"  | "ScriptHost"  | "ES2015.Core"  | "ES2015.Collection"  | "ES2015.Generator"  | "ES2015.Iterable"  | "ES2015.Promise"  | "ES2015.Proxy"  | "ES2015.Reflect"  | "ES2015.Symbol"  | "ES2015.Symbol.WellKnown"  | "ES2016.Array.Include"  | "ES2017.Date"  | "ES2017.Object"  | "ES2017.SharedMemory"  | "ES2017.String"  | "ES2017.Intl"  | "ES2017.TypedArrays"  | "ES2018.AsyncGenerator"  | "ES2018.AsyncIterable"  | "ES2018.Intl"  | "ES2018.Promise"  | "ES2018.RegExp"  | "ES2019.Array"  | "ES2019.Object"  | "ES2019.String"  | "ES2019.Symbol"  | "ES2019.Intl"  | "ES2020.Bigint"  | "ES2020.Date"  | "ES2020.Promise"  | "ES2020.SharedMemory"  | "ES2020.String"  | "ES2020.Symbol.WellKnown"  | "ES2020.Intl"  | "ES2020.Number"  | "ES2021.Promise"  | "ES2021.String"  | "ES2021.WeakRef"  | "ES2021.Intl"  | "ES2022.Array"  | "ES2022.Error"  | "ES2022.Intl"  | "ES2022.Object"  | "ES2022.SharedMemory"  | "ES2022.String"  | "ES2022.RegExp"  | "ES2023.Array"  | "ES2023.Collection"  | "ESNext.Array"  | "ESNext.Collection"  | "ESNext.Symbol"  | "ESNext.AsyncIterable"  | "ESNext.Intl"  | "ESNext.Disposable"  | "ESNext.BigInt"  | "ESNext.String"  | "ESNext.Promise"  | "ESNext.WeakRef"  | "ESNext.Decorators"  | "Decorators"  | "Decorators.Legacy";
export function getCompilerLibOption(target: ScriptTarget): LibName[] {  switch (target) {    case "ES3":      return [];    case "ES5":      return ["ES5"];    case "ES2015":      return ["ES2015"];    case "ES2016":      return ["ES2016"];    case "ES2017":      return ["ES2017"];    case "ES2018":      return ["ES2018"];    case "ES2019":      return ["ES2019"];    case "ES2020":      return ["ES2020"];    case "ES2021":      return ["ES2021"];    case "ES2022":      return ["ES2022"];    case "Latest":      return ["ESNext"];    default: {      const _assertNever: never = target;      throw new Error(`Unknown target compiler option: ${target}`);    }  }}
export function libNamesToCompilerOption(names: LibName[]) {  const libFileNames: string[] = [];  const libMap = (ts as any).libMap as Map<string, string>;  for (const name of names) {    const fileName = libMap.get(name.toLowerCase());    if (fileName == null) {      throw new Error(`Could not find filename for lib: ${name}`);    } else {      libFileNames.push(fileName);    }  }  return libFileNames;}
export type SourceMapOptions = "inline" | boolean;
export function getCompilerSourceMapOptions(  sourceMaps: SourceMapOptions | undefined,): { inlineSourceMap?: boolean; sourceMap?: boolean } {  switch (sourceMaps) {    case "inline":      return { inlineSourceMap: true };    case true:      return { sourceMap: true };    default:      return {};  }}
export function getTopLevelAwaitLocation(sourceFile: ts.SourceFile) {  const topLevelAwait = getTopLevelAwait(sourceFile);  if (topLevelAwait !== undefined) {    return sourceFile.getLineAndCharacterOfPosition(      topLevelAwait.getStart(sourceFile),    );  }  return undefined;}
function getTopLevelAwait(node: ts.Node): ts.Node | undefined {  if (ts.isAwaitExpression(node)) {    return node;  }  if (ts.isForOfStatement(node) && node.awaitModifier !== undefined) {    return node;  }  return ts.forEachChild(node, (child) => {    if (      !ts.isFunctionDeclaration(child) && !ts.isFunctionExpression(child) &&      !ts.isArrowFunction(child) && !ts.isMethodDeclaration(child)    ) {      return getTopLevelAwait(child);    }  });}
export function transformCodeToTarget(code: string, target: ts.ScriptTarget) {  return ts.transpile(code, {    target,  });}