How to use the indexBy function from ramda

integreat.js

GitHub: integreat-io/integreat

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  {}
)

// Setup services object from service defs.
const services = R.compose(
  R.indexBy(R.prop('id')),
  R.map(
    createService({
      adapters,
      auths,

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index.js

GitHub: GlobalStrategies/jsgrowup

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const getWhoFilePath = tableName => `${__dirname}/tables/${tableName}_zscores.json`;
const loadWhoFiles = R.pipe(getWhoFilePath, R.pipeP(fs.readFile, JSON.parse));

const allowedIndexKeys = ['Length', 'Height', 'Month', 'Week'];
const operativeIndexKey = R.pipe(R.keysIn, R.intersection(allowedIndexKeys), R.head);
const reIndex = R.indexBy(R.chain(R.prop, operativeIndexKey));
// find first allowed index key within object keys — this is the operative index key
// index by the values of the operative index key

// reindex all

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get_tunes.js

GitHub: bbecquet/irish-tune-map

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    id: tune.tune,
    type: tune.type,
    names: [tune.name],
  })),
  R.uniqBy(R.prop('id')),
  R.indexBy(R.prop('id'))
)


const transformAliases = R.pipe(R.groupBy(R.prop('tune_id')), R.map(R.pluck('alias')))

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16.js

GitHub: alvaro-cuesta/aoc-js

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        rate: parseDecimal,
        tunnels: R.split(', '),
      }),
    ),
  ),
  R.indexBy(R.prop('valve')),
)


const candidateToKey = ({ current, openValves, steps }) =>
  `${current}@${steps}-${openValves.sort().join(',')}`

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cyclejs-audio-driver.js

GitHub: jemmyw/cyclejs-audio-driver

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 * @param {Array} array The array of objects to index
 * @return {Object} An object indexing each array element by the given property.
 * @example
 *
 *      var list = [{id: 'xyz', title: 'A'}, {id: 'abc', title: 'B'}];
 *      R.indexBy(R.prop('id'), list);
 *      //=> {abc: {id: 'abc', title: 'B'}, xyz: {id: 'xyz', title: 'A'}}
 */
var indexBy = reduceBy(function (acc, elem) {
    return elem;

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+ 17 other calls in file

create-cicd-creds.js

GitHub: shashankd914/aws-boilerplate

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  const describeStackResult = await cloudFormation.describeStacks({
    StackName: prefixGlobalResourceName(stackName),
  }).promise();


  const { Outputs: outputs } = describeStackResult.Stacks[0];
  return indexBy(prop('ExportName'), outputs);
}




(async function () {

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recommendation.js

GitHub: vhutov/personalised-recommender

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    const ids = input.map(R.prop('id'))

    const trackData = await this.#trackService.asyncTrackData(ids)

    const dataMap = R.indexBy(R.prop('id'))(trackData)

    return input.map((entity) => ({ ...entity, ...dataMap[entity.id] }))
}

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solution.js

GitHub: yerlanyr/adventofcode

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const R = require('ramda')
const fs = require('fs')


function solution(input) {
  const parsedInput = parseInput(input)
  const indexedInput = R.indexBy(x => x[0], parsedInput)
  return solve(indexedInput, 'root')
}


function solve(indexInput, name) {

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+ 3 other calls in file

recommendationService.js

GitHub: vhutov/recommendation-service

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    const ids = input.map(R.prop('id'))

    const songData = await this.#enrichmentService.enrichSongData(ids)

    const dataMap = R.indexBy(R.prop('id'))(songData)

    return input.map((entity) => ({ ...entity, ...dataMap[entity.id] }))
}

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