'use strict';
var trimStart = require('string.prototype.trimstart');
var trimEnd = require('string.prototype.trimend');
var $TypeError = require('es-errors/type');
var RequireObjectCoercible = require('./RequireObjectCoercible');
var ToString = require('./ToString');
// https://262.ecma-international.org/10.0/#sec-trimstring
module.exports = function TrimString(string, where) {
var str = RequireObjectCoercible(string);
var S = ToString(str);
var T;
if (where === 'start') {
T = trimStart(S);
} else if (where === 'end') {
T = trimEnd(S);
} else if (where === 'start+end') {
T = trimStart(trimEnd(S));
} else {
throw new $TypeError('Assertion failed: invalid `where` value; must be "start", "end", or "start+end"');
}
return T;
};