21 lines
611 B
JavaScript
21 lines
611 B
JavaScript
export const isNonNullable = val => {
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return val !== undefined && val !== null;
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};
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export const isNumber = val => {
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return typeof val === 'number' && !Number.isNaN(val);
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};
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export const isString = val => {
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return typeof val === 'string';
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};
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export const isPlainObject = val => {
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return val !== null && typeof val === 'object';
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};
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export const isFunction = val => {
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return typeof val === 'function';
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};
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export const isThenable = val => {
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return isNonNullable(val) && isFunction(val.then);
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};
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export const isPrimitive = val => {
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return typeof val !== 'object' && !isFunction(val) || val === null;
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}; |