@oazmi/kitchensink - v0.9.13
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    Function fileUrlToLocalPath

    • convert the input file-url to a filesystem local-path. however, if the input uri is not a file url (for instance "C:/x/y/z", or "http://hello.com"), then undefined will be returned.

      if you are looking to convert any potential file-url back to a filesystem local-path, then the ensureFileUrlIsLocalPath function would be better suited for your need.

      Parameters

      • file_url: string | URL

      Returns undefined | string

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

      // aliasing our functions for brevity
      const
      	fn = fileUrlToLocalPath,
      	eq = assertEquals

      eq(        fn("file:///C:/Users/me/projects/"),           "C:/Users/me/projects/")
      eq(        fn("file:///C:\\Users\\me/projects/"),         "C:/Users/me/projects/")
      eq(        fn("file:///sys/etc/bin/deno.so"),             "/sys/etc/bin/deno.so")
      eq(        fn("file:///sys\\etc/bin\\deno.so"),           "/sys/etc/bin/deno.so")
      eq(        fn("file://localhost/C:/Users/me/projects/"),  "C:/Users/me/projects/")
      eq(        fn("file://localhost/sys/etc/bin/deno.so"),    "/sys/etc/bin/deno.so")
      eq(fn(new URL("file:///C:/Users/me/projects/")),          "C:/Users/me/projects/")
      eq(fn(new URL("file:///sys/etc/bin/deno.so")),            "/sys/etc/bin/deno.so")
      eq(fn(new URL("file://localhost/C:/Users/me/projects/")), "C:/Users/me/projects/")
      eq(fn(new URL("file://localhost/sys/etc/bin/deno.so")),   "/sys/etc/bin/deno.so")

      // everything below is not a file-url, and therefore cannot be converted.
      eq(        fn("http://localhost:8000/hello/world/"),      undefined)
      eq(        fn("C:/Users/me/projects/"),                   undefined)
      eq(        fn("/sys/etc/bin/deno.so"),                    undefined)
      eq(        fn(""),                                        undefined)

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