Build is broken in Node 15

[brendankenny]

manifests as

node:internal/fs/utils:627
    throw new ERR_INVALID_ARG_TYPE(propName, ['string', 'Buffer', 'URL'], path);
    ^

TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string or an instance of Buffer or URL. Received undefined

fix is up in what I believe is the repo for @wardpeet/brfs: wardpeet/brfs#1
(let me know if that's not actually the repo, @wardpeet :)

tl;dr: static-module/brfs rely on errors thrown from trying to do fs.createReadStream(undefined) to decide not to replace code with an inlined string, but fs.createReadStream behavior changed in Node 15 and the error thrown on undefined doesn't happen until later (when pipe() or whatever runs), and so static-module is no longer catching it and it's spoiling the build.