Refactor: drop a few Bun.file usage

Build/lib/create-file.ts

@@ -1,5 +1,4 @@
 // @ts-check
-import { readFileByLine } from './fetch-text-by-line';
 import { surgeDomainsetToClashDomainset, surgeRulesetToClashClassicalTextRuleset } from './clash';
 import picocolors from 'picocolors';
 import type { Span } from '../trace';
@@ -8,10 +7,11 @@ import fs from 'fs';
 import fsp from 'fs/promises';
 import { sort } from './timsort';
 import { fastStringArrayJoin } from './misc';
+import { readFileByLine } from './fetch-text-by-line';
 
 export async function compareAndWriteFile(span: Span, linesA: string[], filePath: string) {
   let isEqual = true;
-  const file = Bun.file(filePath);
+  const fd = await fsp.open(filePath);
 
   const linesALen = linesA.length;
 
@@ -28,7 +28,7 @@ export async function compareAndWriteFile(span: Span, linesA: string[], filePath
     isEqual = await span.traceChildAsync(`comparing ${filePath}`, async () => {
       let index = 0;
 
-      for await (const lineB of readFileByLine(file)) {
+      for await (const lineB of readFileByLine(fd)) {
         const lineA = linesA[index] as string | undefined;
         index++;
 
@@ -83,6 +83,8 @@ export async function compareAndWriteFile(span: Span, linesA: string[], filePath
 
     // return writer.end();
   });
+
+  await fd.close();
 }
 
 export const withBannerArray = (title: string, description: string[] | readonly string[], date: Date, content: string[]) => {

Build/lib/fetch-text-by-line.ts

@@ -1,5 +1,6 @@
 import type { BunFile } from 'bun';
 import { fetchWithRetry, defaultRequestInit } from './fetch-retry';
+import type { FileHandle } from 'fs/promises';
 
 import { TextLineStream } from './text-line-transform-stream';
 import { PolyfillTextDecoderStream } from './text-decoder-stream';
@@ -35,18 +36,20 @@ async function *createTextLineAsyncIterableFromStreamSource(stream: ReadableStre
   }
 }
 
-const getBunBlob = (file: string | URL | BunFile) => {
+const getReadableStream = (file: string | BunFile | FileHandle): ReadableStream => {
   if (typeof file === 'string') {
-    return Bun.file(file);
-  } if (!('writer' in file)) {
-    return Bun.file(file);
+    return Bun.file(file).stream();
   }
-  return file;
+  if ('writer' in file) {
+    return file.stream();
+  }
+  return file.readableWebStream();
 };
 
-export const readFileByLine: ((file: string | URL | BunFile) => AsyncIterable<string>) = enableTextLineStream
-  ? (file: string | URL | BunFile) => getBunBlob(file).stream().pipeThrough(new PolyfillTextDecoderStream()).pipeThrough(new TextLineStream())
-  : (file: string | URL | BunFile) => createTextLineAsyncIterableFromStreamSource(getBunBlob(file).stream());
+// TODO: use FileHandle.readLine()
+export const readFileByLine: ((file: string | BunFile | FileHandle) => AsyncIterable<string>) = enableTextLineStream
+  ? (file: string | BunFile | FileHandle) => getReadableStream(file).pipeThrough(new PolyfillTextDecoderStream()).pipeThrough(new TextLineStream())
+  : (file: string | BunFile | FileHandle) => createTextLineAsyncIterableFromStreamSource(getReadableStream(file));
 
 const ensureResponseBody = (resp: Response) => {
   if (!resp.body) {

Build/lib/get-gorhill-publicsuffix.ts

@@ -2,7 +2,9 @@ import { toASCII } from 'punycode';
 import { createMemoizedPromise } from './memo-promise';
 import { getPublicSuffixListTextPromise } from './download-publicsuffixlist';
 
-const customFetch = (url: string | URL): Promise<Blob> => Promise.resolve(Bun.file(url));
+const customFetch = typeof Bun !== 'undefined'
+  ? (url: string | URL) => Promise.resolve(Bun.file(url))
+  : (url: string | URL) => fetch(url).then(resp => resp.blob() as Promise<Blob>);
 
 export const getGorhillPublicSuffixPromise = createMemoizedPromise(async () => {
   const [publicSuffixListDat, { default: gorhill }] = await Promise.all([