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| author | 8cy <[email protected]> | 2020-04-03 02:37:42 -0700 |
|---|---|---|
| committer | 8cy <[email protected]> | 2020-04-03 02:37:42 -0700 |
| commit | 60867fb030bae582082340ead7dbc7efdc2f5398 (patch) | |
| tree | 4c6a7356351be2e4914e15c4703172597c45656e /node_modules/lodash/_baseRepeat.js | |
| parent | commenting (diff) | |
| download | s5nical-60867fb030bae582082340ead7dbc7efdc2f5398.tar.xz s5nical-60867fb030bae582082340ead7dbc7efdc2f5398.zip | |
2020/04/03, 02:34, v1.2.0
Diffstat (limited to 'node_modules/lodash/_baseRepeat.js')
| -rw-r--r-- | node_modules/lodash/_baseRepeat.js | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/node_modules/lodash/_baseRepeat.js b/node_modules/lodash/_baseRepeat.js new file mode 100644 index 0000000..ee44c31 --- /dev/null +++ b/node_modules/lodash/_baseRepeat.js @@ -0,0 +1,35 @@ +/** Used as references for various `Number` constants. */ +var MAX_SAFE_INTEGER = 9007199254740991; + +/* Built-in method references for those with the same name as other `lodash` methods. */ +var nativeFloor = Math.floor; + +/** + * The base implementation of `_.repeat` which doesn't coerce arguments. + * + * @private + * @param {string} string The string to repeat. + * @param {number} n The number of times to repeat the string. + * @returns {string} Returns the repeated string. + */ +function baseRepeat(string, n) { + var result = ''; + if (!string || n < 1 || n > MAX_SAFE_INTEGER) { + return result; + } + // Leverage the exponentiation by squaring algorithm for a faster repeat. + // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details. + do { + if (n % 2) { + result += string; + } + n = nativeFloor(n / 2); + if (n) { + string += string; + } + } while (n); + + return result; +} + +module.exports = baseRepeat; |