Description

prek install crashes on Android (Termux) with a TypeError in the platform detection logic. The getGnuLibcVersion() function returns null on Android (which uses Bionic libc, not glibc), and the result is passed to .split() without a null check.

Error

/node_modules/@j178/prek/binary.js:63
      let splitLibcVersion = libcVersion.split(".");
                                         ^

TypeError: Cannot read properties of null (reading 'split')
    at getPlatform (binary.js:63:42)
    at getPackage (binary.js:97:20)
    at run (binary.js:118:19)

Environment

• Platform: linux aarch64 (Android 15, Termux)
• Node.js: v24.13.0
• prek: 0.3.8

Expected behavior

prek install should either:

• Fall back gracefully when libc version can't be detected (e.g., try musl or report an unsupported platform)
• Provide a clear error message that the platform is unsupported

Root cause

getPlatform() in binary.js calls getGnuLibcVersion() which returns null on non-glibc systems. The null return is not handled before calling .split(".") on line 63.