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import { ensureDir } from "https://deno.land/std@0.136.0/fs/ensure_dir.ts";import { dirname, join } from "https://deno.land/std@0.136.0/path/mod.ts";import { existsFile } from "../lib/fs.ts";import { isCanary, VERSION } from "../version.ts";import init, {  parseDeps as parseDepsWasmFn,  parseExportNames as parseExportNamesWasmFn,  transform as transformWasmFn,  transformCSS as parcelCSS,} from "./dist/compiler.js";import decodeWasmData from "./dist/wasm.js";import {  DependencyDescriptor,  TransformCSSOptions,  TransformCSSResult,  TransformOptions,  TransformResult,} from "./types.ts";
let wasmReady: Promise<void> | boolean = false;
async function checkWasmReady() {  if (wasmReady === false) {    wasmReady = initWasm();  }  if (wasmReady instanceof Promise) {    await wasmReady;    wasmReady = true;  }}
async function initWasm() {  const mcdir = Deno.env.get("MODULES_CACHE_DIR");  if (mcdir && !Deno.env.get("ALEPH_DEV")) {    const pkgName = isCanary ? "aleph_canary" : "aleph";    const cacheDir = join(mcdir, `https/deno.land/x/${pkgName}`);    const cachePath = `${cacheDir}/compiler.${VERSION}.wasm`;    if (await existsFile(cachePath)) {      const wasmData = await Deno.readFile(cachePath);      await init(wasmData);    } else {      const wasmData = decodeWasmData();      await init(wasmData);      await ensureDir(dirname(cachePath));      await Deno.writeFile(cachePath, wasmData);    }  } else {    const wasmData = decodeWasmData();    await init(wasmData);  }}
/** parse export names */export async function parseExportNames(  specifier: string,  code: string,): Promise<string[]> {  await checkWasmReady();  return parseExportNamesWasmFn(specifier, code);}
/** fast transform without transpile code raw syntax */export async function parseDeps(  specifier: string,  code: string,  options: Pick<TransformOptions, "importMap" | "lang"> = {},): Promise<DependencyDescriptor[]> {  await checkWasmReady();  return parseDepsWasmFn(specifier, code, options);}
/** * Transforms the module with esbuild/swc. * * ```tsx * transform( *   '/app.tsx', *   ` *    import React from 'https://esm.sh/react'; * *    export default App() { *      return <h1>Hello world!</h1> *    } *   ` * ) * ``` */export async function transform(  specifier: string,  code: string,  options: TransformOptions = {},): Promise<TransformResult> {  await checkWasmReady();  return transformWasmFn(specifier, code, options);}
/** * Compiles a CSS file, including optionally minifying and lowering syntax to the given * targets. A source map may also be generated, but this is not enabled by default. */export async function transformCSS(  specifier: string,  code: string,  options: TransformCSSOptions = {},): Promise<TransformCSSResult> {  await checkWasmReady();  return parcelCSS(specifier, code, options);}