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coalesceFactory javascript Code Snippet in 2023

functiontypeintermediate

Last Updated: 3 February 2023

Customizes a coalesce function that returns the first argument which is true based on the given validator.

  • Use Array.prototype.find() to return the first argument that returns true from the provided argument validation function, valid.
const coalesceFactory = valid => (...args) => args.find(valid);
const customCoalesce = coalesceFactory( v => ![null, undefined, '', NaN].includes(v) ); customCoalesce(undefined, null, NaN, '', 'Waldo'); // 'Waldo'

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