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feat: extend Deno.FsFile from FsFileWrapper #190

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merged 1 commit into from
Nov 14, 2023
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feat: extend Deno.FsFile from FsFileWrapper #190

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87 changes: 11 additions & 76 deletions src/path.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -865,12 +865,12 @@ export class PathRef {
/** Creates a new file or opens the existing one. */
create(): Promise<FsFileWrapper> {
return Deno.create(this.#path)
.then((file) => new FsFileWrapper(file));
.then((file) => createFsFileWrapper(file));
}

/** Synchronously creates a new file or opens the existing one. */
createSync(): FsFileWrapper {
return new FsFileWrapper(Deno.createSync(this.#path));
return createFsFileWrapper(Deno.createSync(this.#path));
}

/** Creates a file throwing if a file previously existed. */
Expand All @@ -894,12 +894,12 @@ export class PathRef {
/** Opens a file. */
open(options?: Deno.OpenOptions): Promise<FsFileWrapper> {
return Deno.open(this.#path, options)
.then((file) => new FsFileWrapper(file));
.then((file) => createFsFileWrapper(file));
}

/** Opens a file synchronously. */
openSync(options?: Deno.OpenOptions): FsFileWrapper {
return new FsFileWrapper(Deno.openSync(this.#path, options));
return createFsFileWrapper(Deno.openSync(this.#path, options));
}

/** Removes the file or directory from the file system. */
Expand Down Expand Up @@ -1124,18 +1124,12 @@ function createSymlinkSync(opts: CreateSymlinkOpts) {
);
}

export class FsFileWrapper implements Deno.FsFile {
#file: Deno.FsFile;

constructor(file: Deno.FsFile) {
this.#file = file;
}

/** Gets the inner `Deno.FsFile` that this wraps. */
get inner(): Deno.FsFile {
return this.#file;
}
function createFsFileWrapper(file: Deno.FsFile): FsFileWrapper {
Object.setPrototypeOf(file, FsFileWrapper.prototype);
return file as FsFileWrapper;
}

export class FsFileWrapper extends Deno.FsFile {
/** Writes the provided text to this file. */
writeText(text: string): Promise<this> {
return this.writeBytes(new TextEncoder().encode(text));
Expand All @@ -1148,74 +1142,15 @@ export class FsFileWrapper implements Deno.FsFile {

/** Writes the provided bytes to the file. */
async writeBytes(bytes: Uint8Array): Promise<this> {
await writeAll(this.#file, bytes);
await writeAll(this, bytes);
return this;
}

/** Synchronously writes the provided bytes to the file. */
writeBytesSync(bytes: Uint8Array): this {
writeAllSync(this.#file, bytes);
writeAllSync(this, bytes);
return this;
}

// below is Deno.FsFile implementation... could probably be something
// done in the constructor instead.

get rid(): number {
return this.#file.rid;
}

get readable(): ReadableStream<Uint8Array> {
return this.#file.readable;
}

get writable(): WritableStream<Uint8Array> {
return this.#file.writable;
}

write(p: Uint8Array): Promise<number> {
return this.#file.write(p);
}

writeSync(p: Uint8Array): number {
return this.#file.writeSync(p);
}

truncate(len?: number | undefined): Promise<void> {
return this.#file.truncate(len);
}

truncateSync(len?: number | undefined): void {
return this.#file.truncateSync(len);
}

read(p: Uint8Array): Promise<number | null> {
return this.#file.read(p);
}

readSync(p: Uint8Array): number | null {
return this.#file.readSync(p);
}

seek(offset: number, whence: Deno.SeekMode): Promise<number> {
return this.#file.seek(offset, whence);
}

seekSync(offset: number, whence: Deno.SeekMode): number {
return this.#file.seekSync(offset, whence);
}

stat(): Promise<Deno.FileInfo> {
return this.#file.stat();
}

statSync(): Deno.FileInfo {
return this.#file.statSync();
}

close(): void {
return this.#file.close();
}
}

async function notFoundToUndefined<T>(action: () => Promise<T>) {
Expand Down