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// https://github.com/tc39/proposal-string-pad-start-end
var uncurryThis = require('../internals/function-uncurry-this');
var toLength = require('../internals/to-length');
var toString = require('../internals/to-string');
var $repeat = require('../internals/string-repeat');
var requireObjectCoercible = require('../internals/require-object-coercible');
var repeat = uncurryThis($repeat);
var stringSlice = uncurryThis(''.slice);
var ceil = Math.ceil;
// `String.prototype.{ padStart, padEnd }` methods implementation
var createMethod = function (IS_END) {
return function ($this, maxLength, fillString) {
var S = toString(requireObjectCoercible($this));
var intMaxLength = toLength(maxLength);
var stringLength = S.length;
var fillStr = fillString === undefined ? ' ' : toString(fillString);
var fillLen, stringFiller;
if (intMaxLength <= stringLength || fillStr == '') return S;
fillLen = intMaxLength - stringLength;
stringFiller = repeat(fillStr, ceil(fillLen / fillStr.length));
if (stringFiller.length > fillLen) stringFiller = stringSlice(stringFiller, 0, fillLen);
return IS_END ? S + stringFiller : stringFiller + S;
};
};
module.exports = {
// `String.prototype.padStart` method
// https://tc39.es/ecma262/#sec-string.prototype.padstart
start: createMethod(false),
// `String.prototype.padEnd` method
// https://tc39.es/ecma262/#sec-string.prototype.padend
end: createMethod(true)
};