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node_modules/es5-ext/string/#/code-point-at/shim.js
Maintainability
57.72
Lines of code
23
Difficulty
16.30
Estimated Errors
0.18
Function weight
By Complexity
By SLOC
// Based on: https://github.com/mathiasbynens/String.prototype.codePointAt // Thanks @mathiasbynens ! 'use strict'; var toInteger = require('../../../number/to-integer') , validValue = require('../../../object/valid-value'); module.exports = function (pos) { var str = String(validValue(this)), l = str.length, first, second; pos = toInteger(pos); // Account for out-of-bounds indices: if (pos < 0 || pos >= l) return undefined; // Get the first code unit first = str.charCodeAt(pos); if ((first >= 0xD800) && (first <= 0xDBFF) && (l > pos + 1)) { second = str.charCodeAt(pos + 1); if (second >= 0xDC00 && second <= 0xDFFF) { // http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae return (first - 0xD800) * 0x400 + second - 0xDC00 + 0x10000; } } return first; };