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import { instantiate } from "./wasmbuild.generated.js";import { path } from "./deps.ts";
export interface BindgenOutput {  js: string;  snippets: Map<string, string[]>;  localModules: Map<string, string>;  wasmBytes: number[];}
export async function generateBindgen(libName: string, filePath: string) {  // if wasmbuild is building itself, then we need to use the wasm-bindgen-cli  const hasEnvPerm = await Deno.permissions.query({ name: "env" });  if (hasEnvPerm && Deno.env.get("WASMBUILD_BINDGEN_UPGRADE") === "1") {    return generateForSelfBuild(filePath);  }
  const originalWasmBytes = await Deno.readFile(filePath);  const { generate_bindgen } = await instantiate();  return await generate_bindgen(    libName,    originalWasmBytes,  ) as BindgenOutput;}
async function generateForSelfBuild(filePath: string): Promise<BindgenOutput> {  // When upgrading wasm-bindgen within wasmbuild, we can't rely on  // using the .wasm file because it will be out of date and not build,  // so we revert to using the globally installed wasm-bindgen cli.  // See https://github.com/denoland/wasmbuild/issues/51 for more details  const tempPath = await Deno.makeTempDir();  try {    // note: ensure you have run `cargo install -f wasm-bindgen-cli` to upgrade    // to the latest version    const p = new Deno.Command("wasm-bindgen", {      args: [        "--target",        "deno",        "--out-dir",        tempPath,        filePath,      ],    }).spawn();    const output = await p.status;    if (!output.success) {      throw new Error("Failed.");    }    const wasmBytes = await Deno.readFile(      path.join(tempPath, "wasmbuild_bg.wasm"),    );    return {      js: await Deno.readTextFile(path.join(tempPath, "wasmbuild.js")),      localModules: new Map(),      snippets: new Map(),      wasmBytes: Array.from(wasmBytes),    };  } finally {    await Deno.remove(tempPath, {      recursive: true,    });  }}