Emscripten build - file access error with emscripten version 2.0.26 (July 2021)

[kevodwyer]

This issue is to cross-reference bug raised against emscripten version 2.0.26
emscripten-core/emscripten#14783

Have seen below error on occasion:
Uncaught RuntimeError: abort(TypeError: Cannot read property 'ENOENT' of undefined).
Arising from function function ___sys_access(path, amode) in boxedwine.js

Workarounds:

Or 1)
Use previous emscripten toolchain:
./emsdk install 2.0.25
./emsdk activate 2.0.25
source ./emsdk_env.sh

2. comment out below line in ___sys_access function generated by emscripten:
   // if (typeof FS === "undefined" || !(e instanceof FS.ErrnoError)) abort(e);

3. implement workaround at the browserfs level (will wait to see if bug is accepted first)

[kevodwyer]

command line changed to bring in error code dependency.