39 lines
890 B
JavaScript
39 lines
890 B
JavaScript
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export function isFunction(val) {
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return typeof val === 'function';
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}
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export const isString = val => typeof val === 'string';
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export const isNull = value => value === null;
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export const isUndefined = value => value === undefined;
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export function isDef(value) {
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return !isUndefined(value) && !isNull(value);
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}
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export function isInteger(value) {
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return Number.isInteger(value);
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}
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export function isNumeric(value) {
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return !Number.isNaN(Number(value));
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}
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export function isNumber(value) {
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return typeof value === 'number';
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}
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export function isBoolean(value) {
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return typeof value === 'boolean';
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}
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export function isObject(x) {
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const type = typeof x;
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return x !== null && (type === 'object' || type === 'function');
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}
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export function isPlainObject(val) {
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return val !== null && typeof val === 'object' && Object.prototype.toString.call(val) === '[object Object]';
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}
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