Modifiers

addModifier

Manually add a regex modifier (flag).

Parameter	Expected type	Description
value	String	Modifier to add

let expr = VerEx()
console.log(expr.flags); // => 'gm'

expr = expr.addModifier('i');
console.log(expr.flags); // => 'gim'

removeModifier

Manually remove a regex modifier (flag).

Parameter	Expected type	Description
value	String	Modifier to remove

let expr = VerEx();
console.log(expr.flags); // => 'gm'

expr = expr.removeModifier('m');
console.log(expr.flags); // => 'g'

withAnyCase

Control case-insensitive matching. Equivalent to adding or removing the i modifier.

Parameter	Expected type	Description
enable (defaults to true)	boolean	Whether to enable this behavior

const hexColorCode = VerEx()
    .find('#')
    .range('0', '9', 'a', 'f')
    .repeatPrevious(6)
    .withAnyCase();

console.log(hexColorCode.test('#93afee')); // => true
hexColorCode.lastIndex = 0;
console.log(hexColorCode.test('#93AFEE')); // => true

stopAtFirst

Control global matching. Enabling would cause the expression to not look for matches beyond the first match. Equivalent to removing or adding the g modifier. Global matching is enabled by default.

Parameter	Expected type	Description
enable (defaults to true)	boolean	Whether to enable this behavior

searchOneLine

Control multi-line matching. Enabling would cause the expression to not look for matches beyond the first line. Equivalent to removing or adding the m modifier. Multi-line matching is enabled by default.

Parameter	Expected type	Description
enable (defaults to true)	boolean	Whether to enable this behavior

let findFoo = VerEx().startOfLine().find('foo').endOfLine();
console.log(findFoo.test('foo\nfoo\nfoo')); // => true

findFoo = findFoo.searchOneLine();
console.log(findFoo.test('foo\nfoo\nfoo')); // => false

repeatPrevious

Usage 1

Repeat the previous item exactly count times.

Parameter	Expected type	Description
count	Number	Number of times to repeat the previous item

const expr = VerEx()
    .startOfLine()
    .find('foo')
    .repeatPrevious(2)
    .endOfLine();

console.log(expr.test('foofoo')); // => true
expr.lastIndex = 0;
console.log(expr.test('foofoofoo')); // => false

Usage 2

Repeat the previous item between mix and max (inclusive) times.

Parameter	Expected type	Description
min	Number	Minimum number of times to repeat the previous item
max	Number	Maximum number of times to repeat the previous item

const expr = VerEx()
    .startOfLine()
    .find('foo')
    .repeatPrevious(1, 3)
    .endOfLine();

console.log(expr.test('foo')); // => true
expr.lastIndex = 0;
console.log(expr.test('foofoo')); // => true
expr.lastIndex = 0;
console.log(expr.test('foofoofoo')); // => true
expr.lastIndex = 0;
console.log(expr.test('foofoofoofoo')); // => false