Function replaceSuffix

replace the suffix of of a given input string with the given replace value. if a matching suffix is not found, then undefined will be returned.

Example

import { assertEquals } from "jsr:@std/assert"

// aliasing our function for brevity
const
	eq = assertEquals,
	fn = replaceSuffix

eq(fn("hello-world/abc-123", "-123", "-xyz"), "hello-world/abc-xyz")
eq(fn("hello-world/abc-123", "-123"),         "hello-world/abc")
eq(fn("hello-world/abc-123", "abc"),          undefined)
eq(fn("hello-world/abc-123", ""),             "hello-world/abc-123")
eq(fn("hello-world/abc-123", "", "-xyz"),     "hello-world/abc-123-xyz")
  • replaceSuffix(input: string, suffix: string, value?: string): undefined | string

    Parameters

    • input: string

      the input string to apply the suffix replacement to.

    • suffix: string

      the suffix string of the input to replace.

    • value: string = ""

      the optional value to replace the the suffix with. defaults to "" (empty string).

    Returns undefined | string

    if a matching suffix is found in the input, then it will be replaced with the given value. otherwise, undefined will be returned if the input does not begin with the suffix.

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