Regular expressions & common form helper methods

regex.js

// Phone Number format 000-000-0000
export const formattedPhoneRegex = /^[0-9]\d{2}-\d{3}-\d{4}$/i;

// Email
export const emailRegex = /^[a-z0-9`!#\$%&\*\+\/=\?\^\'\-_]+((\.)+[a-z0-9`!#\$%&\*\+\/=\?\^\'\-_]+)*@([a-z0-9]+([\-][a-z0-9])*)+([\.]([a-z0-9]+([\-][a-z0-9])*)+)+$/i;

// No Special Chars
export const noSpecialCharRegex = /^[a-zA-Z0-9]+$/i;

// Auto format the phone number
export function autoFormat(value: string) {
    let newVal = filterNumbers(value);
    newVal = newVal.substr(0, 10); // Limit entry to 10 numbers only.
    return newVal.length === 10 ? newVal.slice(0, 3) + "-" + newVal.slice(3, 6) + "-" + newVal.slice(6) : newVal;
}

export function filterNumbers(value: string) {
    return value.replace(/\D/g, ""); // return only numbers
}

// Get Array from Typescript Enum
export function mapEnum (enumerable: EnumType, fn: Function): any[] {
    // get all the members of the enum
    let enumMembers: any[] = Object.keys(enumerable).map((key: any) => enumerable[key]);

    // now map through the enum values
    return enumMembers.map(m => fn(m));
}