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buffer: fix concat error message
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The list argument may only be of type array, not of any other type
as it actually suggests.

PR-URL: #27050
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Yongsheng Zhang <zyszys98@gmail.com>
Signed-off-by: Beth Griggs <Bethany.Griggs@uk.ibm.com>
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BridgeAR authored and BethGriggs committed Apr 10, 2019
1 parent 5917f4d commit 36714e1
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Showing 2 changed files with 3 additions and 4 deletions.
3 changes: 1 addition & 2 deletions lib/buffer.js
Original file line number Diff line number Diff line change
Expand Up @@ -446,8 +446,7 @@ Buffer[kIsEncodingSymbol] = Buffer.isEncoding;
Buffer.concat = function concat(list, length) {
let i;
if (!Array.isArray(list)) {
throw new ERR_INVALID_ARG_TYPE(
'list', ['Array', 'Buffer', 'Uint8Array'], list);
throw new ERR_INVALID_ARG_TYPE('list', 'Array', list);
}

if (list.length === 0)
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4 changes: 2 additions & 2 deletions test/parallel/test-buffer-concat.js
Original file line number Diff line number Diff line change
Expand Up @@ -49,8 +49,8 @@ assert.strictEqual(flatLongLen.toString(), check);
Buffer.concat(value);
}, {
code: 'ERR_INVALID_ARG_TYPE',
message: 'The "list" argument must be one of type Array, Buffer, ' +
`or Uint8Array. Received type ${typeof value}`
message: 'The "list" argument must be of type Array. ' +
`Received type ${typeof value}`
});
});

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