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61 function getRegex (isDecimal: boolean): RegExp { 62 return new RegExp( 63 isDecimal 64 ? `^(0|[1-9]\\d*)(\\${KEYS.DECIMAL}\\d*)?$` 65 : '^(0|[1-9]\\d*)$' 66 ); 67 }
68 function removeDecimal(num) { 69 const re = new RegExp('^-?\\d+'); 70 return num.toString().match(re)[0]; 71 }
5 public static validate(decimals: number): (control: FormControl) => { pattern: string } | null { 6 const regExpString: string = `^[0-9]+((\\.|,){1}[0-9]\\d{0,${decimals - 1}})?$` 7 const regExp: RegExp = new RegExp(regExpString) 8 9 return (control: FormControl): { pattern: string } | null => { 10 const stringAmount: string = new BigNumber(control.value).toFixed() 11 if (stringAmount.match(regExp) === null) { 12 return { pattern: 'Pattern does not match.' } 13 } 14 15 return null 16 } 17 }