Prune specific types of async hook resources from a collected map.

const prune = require('ah-prune')

// Removing all TickObject
const noticks = prune({ activities, prune: new Set([ 'TickObject' ]) })

// Removing everything but TCPWRAP
const onlytcpwrap = prune({ activities, keep: new Set([ 'TCPWRAP' ]) })

npm install ah-prune

Prunes the supplied async hook activities according to prune or keep option.

It repoints the triggerIds in the process so that the graph is preserved.

Only either prune or keep maybe supplied at once.

The activities passed are not modified, instead a clone is made before the pruning step.

• @param {Object} opts options to configure the pruning step
• @param {Map.<Object>} opts.activities the activities to be pruned
• @param {Set.<String>} opts.prune if supplied all activities of types supplied in the Set are removed
• @param {Set.<String>} opts.keep if supplied all activities of types NOT supplied in the Set are removed
• @return {Map.<Object>} the pruned activities

MIT