lodash npm
$ npm i -g npm
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$ npm i --save lodashlodash npm
$ npm i -g npm
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$ npm i --save lodashlodash map
const _quote_filter = _.map(quote_state, (val, key) => { if (val) { return key }})console.log(_quote_filter) //=> [ 'btc', undefined, undefined ]Copyright © 2021 Codeinu
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