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deno fmt をコードの中で呼ぶ

Posted at

deno のバージョン 1.25.3 時点の話

format.ts
const process = Deno.run({
  cmd: [Deno.execPath(), "fmt", "-"],
  stdin: "piped",
  stdout: "piped",
});

await process.stdin.write(
  new TextEncoder().encode("const a: number =28; console.log(20,(3+4      *  10)     )")
);
process.stdin.writable.close();

console.log(new TextDecoder().decode(await process.output()));

実行コマンド

deno run --allow-run --allow-read ./format.ts

出力

const a: number = 28;
console.log(20, 3 + 4 * 10);

Runtime API として使えるようになれば, --allow-run のフラグはつけなくて良くなりそう

↓ 追加するかの議論
https://github.com/denoland/deno/issues/10731

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