Break down relay utils, replace removeNil with removeUndefined

docs/editor/index.md

@@ -19,14 +19,14 @@ import {get} from "svelte/store"
 import type {Writable} from "svelte/store"
 import type {NodeViewProps} from "@tiptap/core"
 import {Router} from "@welshman/router"
-import {removeNil} from "@welshman/lib"
+import {removeUndefined} from "@welshman/lib"
 import type {FileAttributes} from "@welshman/editor"
 import {Editor, MentionSuggestion, WelshmanExtension} from "@welshman/editor"
 import {profileSearch, deriveProfileDisplay} from "@welshman/app"
 
 export const MentionNodeView = ({node}: NodeViewProps) => {
   const dom = document.createElement("span")
-  const display = deriveProfileDisplay(node.attrs.pubkey, removeNil([url]))
+  const display = deriveProfileDisplay(node.attrs.pubkey, removeUndefined([url]))
 
   dom.classList.add("tiptap-object")
 

docs/lib/tools.md

@@ -324,7 +324,7 @@ export declare const toIterable: (x: any) => any;
 export declare const ensurePlural: <T>(x: T | T[]) => T[];
 
 // Ensures values are not undefined
-export declare const removeNil: <T>(xs: T[]) => (T & {})[];
+export declare const removeUndefined: <T>(xs: T[]) => (T & {})[];
 
 // Returns a list of overlapping pairs of elements in xs
 export declare const overlappingPairs: <T>(xs: T[]) => T[][];