/
numerical.ts
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/
numerical.ts
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import * as util from 'util';
import { default as validator } from 'validator';
/**
* @category Options
*/
export type IsBooleanOptions = {
loose?: boolean
};
/**
*
* @param value
* @param options
* @returns
* @category Validator
*/
export const isBoolean = (value: string | boolean, options?: IsBooleanOptions) => {
if (typeof value === 'boolean') return true;
else return validator.isBoolean(value, options);
};
/**
* @category Options
*/
export type IsDecimalOptions = {
force_decimal?: boolean;
decimal_digits?: string;
locale?: string;
}
/**
*
* @param value
* @param options
* @returns
* @category Numerical Validator
*/
export const isDecimal = (value: string, options?: IsDecimalOptions) => {
return validator.isDecimal(value, options);
};
/**
*
* @param value
* @param min
* @param max
* @returns
* @category Numerical Validator
*/
export const isIntRange = (value: string | number, min: number, max: number) => {
if (typeof value === 'number') {
if (Number.isInteger(value)
&& value >= min && value <= max) {
return true;
} else return false;
}
else if (validator.isInt(value, { min: min, max: max })) {
return true;
} else return false;
};
/**
* @category Options
*/
export type IsIntOptions = {
min?: number, max?: number,
allow_leading_zeros?: boolean
}
/**
*
* @param value
* @param options
* @returns
* @category Numerical Validator
*/
export const isInt = (value: string | number, options?: IsIntOptions) => {
// console.log(`params.IsInt`);
if (typeof value === 'number') {
if (!Number.isInteger(value)) return false;
if (options) {
if (typeof options.max !== 'undefined'
&& typeof options.min !== 'undefined') {
return (value >= options.min && value <= options.max);
} else if (typeof options.max !== 'undefined') {
return value <= options.max;
} else if (typeof options.min !== 'undefined') {
return value >= options.min;
} else return true;
} else return true;
}
else if (validator.isInt(value, options)) return true;
else return false;
};
/**
*
* @param value
* @param min
* @param max
* @returns
* @category Numerical Validator
*/
export const isFloatRange = (value: string | number, min: number, max: number): boolean => {
if (typeof value === 'number') {
if (value >= min && value <= max) return true;
else return false;
}
else if (validator.isFloat(value, { min: min, max: max })) {
return true;
} else return false;
};
/**
* @category Options
*/
export type IsFloatOptions = {
min?: number,
max?: number,
locale?: string
};
/**
*
* @param value
* @param options
* @returns
* @category Numerical Validator
*/
export const isFloat = (value: string | number, options?: IsFloatOptions): boolean => {
if (typeof value === 'number') {
// console.log(`IsFloat number ${value}`);
if (options) {
if (typeof options.max !== 'undefined'
&& typeof options.min !== 'undefined') {
return (value >= options.min && value <= options.max);
} else if (typeof options.max !== 'undefined') {
return value <= options.max;
} else if (typeof options.min !== 'undefined') {
return value >= options.min;
} else return true;
} else return true;
} else {
// console.log(`IsFloat string ${value}`);
if (validator.isFloat(value, options)) return true;
}
return false;
}
/**
* @category Options
*/
export type isNumericOptions = {
no_symbols?: boolean
};
/**
* check if the string contains only numbers.
*
* @param value
* @param options
* @returns
* @category Numerical Validator
*/
export const isNumeric = (value: string,
options?: isNumericOptions): boolean => {
return validator.isNumeric(value, options);
}
/**
* check if the string is a valid octal number.
*
* @param value
* @returns
* @category Numerical Validator
*/
export const isOctal = validator.isOctal;