47 lines
1.5 KiB
JavaScript
47 lines
1.5 KiB
JavaScript
// Copyright BigchainDB GmbH and BigchainDB contributors
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// SPDX-License-Identifier: (Apache-2.0 AND CC-BY-4.0)
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// Code is Apache-2.0 and docs are CC-BY-4.0
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import 'core-js/features/object/entries'
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import decamelize from 'decamelize'
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import queryString from 'query-string'
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/**
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* @private
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* imported from https://github.com/bigchaindb/js-utility-belt/
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*
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* Takes a key-value dictionary (ie. object) and converts it to a query-parameter string that you
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* can directly append into a URL.
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*
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* Extends queryString.stringify by allowing you to specify a `transform` function that will be
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* invoked on each of the dictionary's keys before being stringified into the query-parameter
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* string.
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*
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* By default `transform` is `decamelize`, so a dictionary of the form:
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*
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* {
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* page: 1,
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* pageSize: 10
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* }
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*
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* will be converted to a string like:
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*
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* ?page=1&page_size=10
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*
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* @param {Object} obj Query params dictionary
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* @param {function} [transform=decamelize] Transform function for each of the param keys
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* @return {string} Query param string
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*/
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export default function stringifyAsQueryParam(obj, transform = decamelize) {
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if (!obj || typeof obj !== 'object' || !Object.keys(obj).length) {
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return ''
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}
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const transformedKeysObj = Object.entries(obj).reduce((paramsObj, [key, value]) => {
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paramsObj[transform(key)] = value
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return paramsObj
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}, {})
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return `?${queryString.stringify(transformedKeysObj)}`
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}
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