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buffer: don't predefine error #17021

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buffer: don't predefine error #17021

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12 changes: 6 additions & 6 deletions lib/buffer.js
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Original file line number Diff line number Diff line change
Expand Up @@ -447,14 +447,12 @@ Buffer.isEncoding = function isEncoding(encoding) {
};
Buffer[kIsEncodingSymbol] = Buffer.isEncoding;

const kConcatErr = new errors.TypeError(
'ERR_INVALID_ARG_TYPE', 'list', ['Array', 'Buffer', 'Uint8Array']
);

Buffer.concat = function concat(list, length) {
var i;
if (!Array.isArray(list))
throw kConcatErr;
throw new errors.TypeError(
'ERR_INVALID_ARG_TYPE', 'list', ['Array', 'Buffer', 'Uint8Array']
);

if (list.length === 0)
return new FastBuffer();
Expand All @@ -472,7 +470,9 @@ Buffer.concat = function concat(list, length) {
for (i = 0; i < list.length; i++) {
var buf = list[i];
if (!isUint8Array(buf))
throw kConcatErr;
throw new errors.TypeError(
'ERR_INVALID_ARG_TYPE', 'list', ['Array', 'Buffer', 'Uint8Array']
);
_copy(buf, buffer, pos);
pos += buf.length;
}
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