Files: 4f27567900a7b5b821bccc74e95bfc96c8233159 / node_modules / safe-buffer / index.js
1529 bytesRaw
1 | /* eslint-disable node/no-deprecated-api */ |
2 | var buffer = require('buffer') |
3 | var Buffer = buffer.Buffer |
4 | |
5 | // alternative to using Object.keys for old browsers |
6 | function copyProps (src, dst) { |
7 | for (var key in src) { |
8 | dst[key] = src[key] |
9 | } |
10 | } |
11 | if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) { |
12 | module.exports = buffer |
13 | } else { |
14 | // Copy properties from require('buffer') |
15 | copyProps(buffer, exports) |
16 | exports.Buffer = SafeBuffer |
17 | } |
18 | |
19 | function SafeBuffer (arg, encodingOrOffset, length) { |
20 | return Buffer(arg, encodingOrOffset, length) |
21 | } |
22 | |
23 | // Copy static methods from Buffer |
24 | copyProps(Buffer, SafeBuffer) |
25 | |
26 | SafeBuffer.from = function (arg, encodingOrOffset, length) { |
27 | if (typeof arg === 'number') { |
28 | throw new TypeError('Argument must not be a number') |
29 | } |
30 | return Buffer(arg, encodingOrOffset, length) |
31 | } |
32 | |
33 | SafeBuffer.alloc = function (size, fill, encoding) { |
34 | if (typeof size !== 'number') { |
35 | throw new TypeError('Argument must be a number') |
36 | } |
37 | var buf = Buffer(size) |
38 | if (fill !== undefined) { |
39 | if (typeof encoding === 'string') { |
40 | buf.fill(fill, encoding) |
41 | } else { |
42 | buf.fill(fill) |
43 | } |
44 | } else { |
45 | buf.fill(0) |
46 | } |
47 | return buf |
48 | } |
49 | |
50 | SafeBuffer.allocUnsafe = function (size) { |
51 | if (typeof size !== 'number') { |
52 | throw new TypeError('Argument must be a number') |
53 | } |
54 | return Buffer(size) |
55 | } |
56 | |
57 | SafeBuffer.allocUnsafeSlow = function (size) { |
58 | if (typeof size !== 'number') { |
59 | throw new TypeError('Argument must be a number') |
60 | } |
61 | return buffer.SlowBuffer(size) |
62 | } |
63 |
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