function removeWords( str, words, ignoreCase ) {
	var tokens;
	var token;
	var list;
	var flg;
	var out;
	var N;
	var i;
	var j;

	if ( !isString( str ) ) {
		throw new TypeError( format( 'invalid argument. First argument must be a string. Value: `%s`.', str ) );
	}
	if ( !isStringArray( words ) ) {
		throw new TypeError( format( 'invalid argument. Second argument must be an array of strings. Value: `%s`.', words ) );
	}
	if ( arguments.length > 2 ) {
		if ( !isBoolean( ignoreCase ) ) {
			throw new TypeError( format( 'invalid argument. Third argument must be a boolean. Value: `%s`.', ignoreCase ) );
		}
	}
	tokens = tokenize( str, true );
	N = words.length;
	out = [];
	if ( ignoreCase ) {
		list = words.slice();
		for ( i = 0; i < N; i++ ) {
			list[ i ] = uppercase( list[ i ] );
		}
		for ( i = 0; i < tokens.length; i++ ) {
			flg = true;
			token = uppercase( tokens[ i ] );
			for ( j = 0; j < N; j++ ) {
				if ( list[ j ] === token ) {
					flg = false;
					break;
				}
			}
			if ( flg ) {
				out.push( tokens[ i ] );
			}
		}
		return out.join( '' );
	}
	// Case: case-sensitive
	for ( i = 0; i < tokens.length; i++ ) {
		token = tokens[ i ];
		flg = true;
		for ( j = 0; j < N; j++ ) {
			if ( words[ j ] === token ) {
				flg = false;
				break;
			}
		}
		if ( flg ) {
			out.push( token );
		}
	}
	return out.join( '' );
}
Removes a list of words from a string.

@param {string} str - input string
@param {StringArray} words - array of words to be removed
@param {boolean} [ignoreCase=false] - boolean indicating whether to perform a case-insensitive operation
@throws {TypeError} first argument must be a string
@throws {TypeError} second argument must be an array of strings
@throws {TypeError} third argument must be a boolean
@returns {string} output string

@example
var str = 'beep boop Foo bar';
var out = removeWords( str, [ 'boop', 'foo' ] );
// returns 'beep  Foo bar'

@example
var str = 'beep boop Foo bar';
var out = removeWords( str, [ 'boop', 'foo' ], true );
// returns 'beep   bar'