refactor: remove dead code (#5188)

* refactor: delete unused code

* refactor: move onLine to test helpers

* Revert "refactor: move onLine to test helpers"

This reverts commit 32cc27b213.

* fixup! refactor: delete unused code

src/common/util.ts

@@ -1,12 +1,3 @@
-/**
- * Split a string up to the delimiter. If the delimiter doesn't exist the first
- * item will have all the text and the second item will be an empty string.
- */
-export const split = (str: string, delimiter: string): [string, string] => {
-  const index = str.indexOf(delimiter)
-  return index !== -1 ? [str.substring(0, index).trim(), str.substring(index + 1)] : [str, ""]
-}
-
 /**
  * Appends an 's' to the provided string if count is greater than one;
  * otherwise the string is returned
@@ -34,27 +25,6 @@ export const normalize = (url: string, keepTrailing = false): string => {
   return url.replace(/\/\/+/g, "/").replace(/\/+$/, keepTrailing ? "/" : "")
 }
 
-/**
- * Remove leading and trailing slashes.
- */
-export const trimSlashes = (url: string): string => {
-  return url.replace(/^\/+|\/+$/g, "")
-}
-
-/**
- * Wrap the value in an array if it's not already an array. If the value is
- * undefined return an empty array.
- */
-export const arrayify = <T>(value?: T | T[]): T[] => {
-  if (Array.isArray(value)) {
-    return value
-  }
-  if (typeof value === "undefined") {
-    return []
-  }
-  return [value]
-}
-
 // TODO: Might make sense to add Error handling to the logger itself.
 export function logError(logger: { error: (msg: string) => void }, prefix: string, err: unknown): void {
   if (err instanceof Error) {