Is it possible to "filter" a Map by value in Typescript?
It is
Array.from(map.values()).filter((item: Event) => item.event_id === eventId);Or for TypeScript downlevelIteration option,
[...map.values()].filter((item: Event) => item.event_id === eventId);
Here's a short syntax that keeps keys and values together:
const dict = new Map([["Z", 1324], ["A", 1], ["B", 2], ["C", 3], ["D", -12345]])const filtered = [...dict.entries()].filter( it => it[1] < 10 ) // > [ [ 'A', 1 ], [ 'B', 2 ], [ 'C', 3 ], [ 'D', -12345 ] ]
This one uses Object.entries to convert the map to an array, and Object.fromEntries to convert back to map.
let qs = {a:'A 1',b:null,c:'C 3'};let qsfiltered = Object.fromEntries( Object.entries(qs).filter(([k,v]) => v !== null));console.log(JSON.stringify(qsfiltered));