| 20 | }); |
| 21 | |
| 22 | function main({ len, n, source }) { |
| 23 | let i = 0; |
| 24 | |
| 25 | switch (source) { |
| 26 | case 'array': { |
| 27 | const array = new Array(len).fill(42); |
| 28 | bench.start(); |
| 29 | for (i = 0; i < n; i++) { |
| 30 | Buffer.from(array); |
| 31 | } |
| 32 | bench.end(n); |
| 33 | break; |
| 34 | } |
| 35 | case 'arraybuffer': { |
| 36 | const arrayBuf = new ArrayBuffer(len); |
| 37 | bench.start(); |
| 38 | for (i = 0; i < n; i++) { |
| 39 | Buffer.from(arrayBuf); |
| 40 | } |
| 41 | bench.end(n); |
| 42 | break; |
| 43 | } |
| 44 | case 'arraybuffer-middle': { |
| 45 | const arrayBuf = new ArrayBuffer(len); |
| 46 | const offset = ~~(len / 4); |
| 47 | const length = ~~(len / 2); |
| 48 | bench.start(); |
| 49 | for (i = 0; i < n; i++) { |
| 50 | Buffer.from(arrayBuf, offset, length); |
| 51 | } |
| 52 | bench.end(n); |
| 53 | break; |
| 54 | } |
| 55 | case 'buffer': { |
| 56 | const buffer = Buffer.allocUnsafe(len); |
| 57 | bench.start(); |
| 58 | for (i = 0; i < n; i++) { |
| 59 | Buffer.from(buffer); |
| 60 | } |
| 61 | bench.end(n); |
| 62 | break; |
| 63 | } |
| 64 | case 'uint8array': { |
| 65 | const uint8array = new Uint8Array(len); |
| 66 | bench.start(); |
| 67 | for (i = 0; i < n; i++) { |
| 68 | Buffer.from(uint8array); |
| 69 | } |
| 70 | bench.end(n); |
| 71 | break; |
| 72 | } |
| 73 | case 'uint16array': { |
| 74 | const uint16array = new Uint16Array(len); |
| 75 | bench.start(); |
| 76 | for (i = 0; i < n; i++) { |
| 77 | Buffer.from(uint16array); |
| 78 | } |
| 79 | bench.end(n); |