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lastIndexOf: fix byteOffset when encoding passed as second arg #369

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lastIndexOf: fix byteOffset when encoding passed as second arg #369

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2 changes: 1 addition & 1 deletion index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -712,7 +712,7 @@ function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
// Normalize byteOffset
if (typeof byteOffset === 'string') {
encoding = byteOffset
byteOffset = 0
byteOffset = undefined
} else if (byteOffset > 0x7fffffff) {
byteOffset = 0x7fffffff
} else if (byteOffset < -0x80000000) {
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9 changes: 9 additions & 0 deletions test/methods.js
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Original file line number Diff line number Diff line change
Expand Up @@ -138,3 +138,12 @@ test('buffer.slice out of range', function (t) {
t.equal((new B('hallo')).slice(10, 2).toString(), '')
t.end()
})

test('lastIndexOf with encoding as second arg', function (t) {
const b = new B('abcdefghij')
t.equal(b.lastIndexOf('b'), 1)
t.equal(b.lastIndexOf('b', 'utf8'), 1)
t.equal(b.lastIndexOf('b', 'latin1'), 1)
t.equal(b.lastIndexOf('b', 'binary'), 1)
t.end()
})