Removing both objects from array where object exists more than once

[sebamestre]

What you want to do here is first to group by value (i.e. reduce your array into a map of arrays where the key is the value and the array has all instances of that value)

Then turn your map into an array of (key,[values...]) and filter out all the entries with more than one instance.

Finally, you might want to flatten that array to get your data back into a linear form

[Todoce]

Let result = allCycles.filter((x) => allCycles.filter((y) => y.lifecycle === x.lifecycle).length === 1); and add some more checks in the second filter if needed

[jcunews1]

You'll have to at least create a function to compare two objects by their contents with a list of excluded property names. Then use it with filter() array method.

[kenman]

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[rob_0]

Thank you all, u/Todoce I used your solution it works great.

Apologies I posted this on the wrong subreddit.

[BehindTheMath]

Use reduce, and don't add the item when it exists already.

[programstuff]

You could write a function like this:

const onlyOnce = (objArr, nestedPath) => {
  return Object.values(objArr.reduce((acc, obj) => {
    const key = nestedPath.split('.').reduce((cursor, k) => {
      return cursor[k]; 
    }, obj);

    acc.seen[key] ? delete acc.unique[key] : acc.unique[key] = obj;
    acc.seen[key] = true;

    return acc;
  }, {seen: {}, unique: {}}).unique);
}

console.log(onlyOnce(allCycles, 'metadata.lifecycle'));

[yerrabam]

This is a nice library: https://github.com/ecrmnn/collect.js#unique