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| author | ruki <waruqi@gmail.com> | 2018-11-08 00:38:48 +0800 |
|---|---|---|
| committer | ruki <waruqi@gmail.com> | 2018-11-07 21:53:09 +0800 |
| commit | 26105034da4fcce7ac883c899d781f016559310d (patch) | |
| tree | c459a5dc4e3aa0972d9919033ece511ce76dd129 /node_modules/pretty-bytes/index.js | |
| parent | 2c77f00f1a7ecb6c8192f9c16d3b2001b254a107 (diff) | |
| download | xmake-docs-26105034da4fcce7ac883c899d781f016559310d.tar.gz xmake-docs-26105034da4fcce7ac883c899d781f016559310d.zip | |
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Diffstat (limited to 'node_modules/pretty-bytes/index.js')
| -rw-r--r-- | node_modules/pretty-bytes/index.js | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/node_modules/pretty-bytes/index.js b/node_modules/pretty-bytes/index.js new file mode 100644 index 00000000..cdcec7e6 --- /dev/null +++ b/node_modules/pretty-bytes/index.js @@ -0,0 +1,24 @@ +'use strict'; +const UNITS = ['B', 'kB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB']; + +module.exports = num => { + if (!Number.isFinite(num)) { + throw new TypeError(`Expected a finite number, got ${typeof num}: ${num}`); + } + + const neg = num < 0; + + if (neg) { + num = -num; + } + + if (num < 1) { + return (neg ? '-' : '') + num + ' B'; + } + + const exponent = Math.min(Math.floor(Math.log(num) / Math.log(1000)), UNITS.length - 1); + const numStr = Number((num / Math.pow(1000, exponent)).toPrecision(3)); + const unit = UNITS[exponent]; + + return (neg ? '-' : '') + numStr + ' ' + unit; +}; |
