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fs: use byteLength to handle ArrayBuffer views #38187

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fs: use byteLength to handle ArrayBuffer views #38187

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2c21cc5
fs: use byteLength to handle ArrayBuffer views
targos Apr 10, 2021
6aa8868
fixup! fs: use byteLength to handle ArrayBuffer views
targos Apr 10, 2021
1a7d312
update docs
targos Apr 11, 2021
aecb68b
fixup
targos Apr 11, 2021
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fixup! fs: use byteLength to handle ArrayBuffer views
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@targos
targos committed Apr 10, 2021
commit 6aa8868f278ee0f7d306737aa2893393deb49769
16 changes: 8 additions & 8 deletions lib/internal/fs/promises.js
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Original file line number Diff line number Diff line change
Expand Up @@ -279,19 +279,19 @@ async function writeFileHandle(filehandle, data, signal, encoding) {
checkAborted(signal);
await write(
filehandle, buf, undefined,
isArrayBufferView(buf) ? buf.length : encoding);
isArrayBufferView(buf) ? buf.byteLength : encoding);
checkAborted(signal);
}
return;
}
data = new Uint8Array(data.buffer, data.byteOffset, data.byteLength);
let remaining = data.length;
let remaining = data.byteLength;
if (remaining === 0) return;
do {
checkAborted(signal);
const { bytesWritten } =
await write(filehandle, data, 0,
MathMin(kWriteFileMaxChunkSize, data.length));
MathMin(kWriteFileMaxChunkSize, data.byteLength));
remaining -= bytesWritten;
data = new Uint8Array(
data.buffer,
Expand Down Expand Up @@ -403,7 +403,7 @@ async function read(handle, bufferOrOptions, offset, length, position) {
buffer = Buffer.alloc(16384);
}
offset = bufferOrOptions.offset || 0;
length = buffer.length;
length = buffer.byteLength;
position = bufferOrOptions.position || null;
}

Expand All @@ -418,12 +418,12 @@ async function read(handle, bufferOrOptions, offset, length, position) {
if (length === 0)
return { bytesRead: length, buffer };

if (buffer.length === 0) {
if (buffer.byteLength === 0) {
throw new ERR_INVALID_ARG_VALUE('buffer', buffer,
'is empty and cannot be written');
}

validateOffsetLengthRead(offset, length, buffer.length);
validateOffsetLengthRead(offset, length, buffer.byteLength);

if (!NumberIsSafeInteger(position))
position = -1;
Expand All @@ -446,7 +446,7 @@ async function readv(handle, buffers, position) {
}

async function write(handle, buffer, offset, length, position) {
if (buffer?.length === 0)
if (buffer?.byteLength === 0)
return { bytesWritten: 0, buffer };

if (isArrayBufferView(buffer)) {
Expand All @@ -456,7 +456,7 @@ async function write(handle, buffer, offset, length, position) {
validateInteger(offset, 'offset');
}
if (typeof length !== 'number')
length = buffer.length - offset;
length = buffer.byteLength - offset;
if (typeof position !== 'number')
position = null;
validateOffsetLengthWrite(offset, length, buffer.byteLength);
Expand Down