This might not be a direct answer but is definitely related and helpful to some...
I created this function a while back inspired by Laravels data_get() php function:
/**
* Get an item from an array or object using "dot" notation.
*
* @param {object} source
* @param {array|string} name
* @param {null|*} defaultValue
*
* @returns {null|*}
*/
window.objectGet = function( source, name, defaultValue = null ) {
const parts = Array.isArray( name ) ? name : name.split( '.' );
// Duplicate array prevents modifying original by reference
let partsTracking = Array.isArray( name ) ? name : name.split( '.' );
for ( let i = 0; i < parts.length; i++ ) {
const segment = parts[ i ];
partsTracking.splice( 0, 1 );
if ( segment === null ) {
return source;
}
if ( segment === '*' ) {
if ( !source || typeof source !== 'object' ) {
return defaultValue;
}
let tmpResult = [];
for ( var key in source ) {
tmpResult.push( objectGet( source[ key ], partsTracking.join( '.' ), defaultValue ) );
}
return partsTracking.includes( '*' ) ? tmpResult.flat( Infinity ) : tmpResult;
}
if ( source && typeof source === 'object' && segment in source ) {
source = source[ segment ];
} else {
return defaultValue;
}
}
return source;
};
Example usage:
const myObject = {
key: 'value',
nested: {
example: [
'value1',
'value2',
]
}
};
console.log( objectGet( myObject, 'key' ) ); // Output: 'value'
console.log( objectGet( myObject, 'nested.example' ) ); // Output: [ 'value1', 'value2' ]
console.log( objectGet( myObject, 'nested.example.0' ) ); // Output: 'value1'
console.log( objectGet( myObject, 'nested.example.1' ) ); // Output: 'value2'
So usage in regards to OPs question might be something like:
const duration = objectGet( outbound, 'duration' );
const departureIataCode = objectGet( outbound, 'segments.0.departure.iataCode' );
const departAt = objectGet( outbound, 'segments.0.departure.at' );
const arrivalIataCode = objectGet( outbound, 'segments.0.arrival.iataCode' );
const arriveAt = objectGet( outbound, 'segments.0.arrival.at' );
const carrierCode = objectGet( outbound, 'segments.0.carrierCode' );
const stopOverDepartureIataCode = objectGet( outbound, 'segments.1.departure.iataCode' );
const stopOverDepartAt = objectGet( outbound, 'segments.1.departure.at' );
const finalArrivalIataCode = objectGet( outbound, 'segments.1.arrival.iataCode' );
const finalArriveAt = objectGet( outbound, 'segments.1.arrival.at' );
I should add that if a key isn't found, null will be returned. You can pass default values as the third parameter, for example:
const notFound = objectGet( input, 'my.data.key', 'my default value' );
You can also return an array of nest values by using * for example:
const input = {
data: [
{
id: 123,
name: 'Example 1'
},
{
id: 789,
name: 'Example 2'
}
]
};
const ids = objectGet( input, 'data.*.id' ); // Ouput: [ 123, 789 ]
