To use the findKey
function from the Underscore library in TypeScript, first install the library through NPM:
23 chars2 lines
Then, import the findKey
function:
index.ts38 chars2 lines
The findKey
function takes two arguments: an object and a predicate function. The predicate function is called for each key-value pair in the object, with the value as the first argument and the key as the second argument. If the predicate function returns a truthy value, findKey
returns the corresponding key. If the predicate function returns falsey for all key-value pairs, findKey
returns undefined
.
Here's an example usage of findKey
:
index.ts322 chars14 lines
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