jsx detect maps support may fail

[leoliu]

Might be a bug in rebar3 instead. But I got a crash because jsx is returning [{,}] instead of the expected maps that I always prefer.

In a project that uses jsx. I am doing this with OTP 20-rc1.

rebar3 clean --all
rebar3 as prod release

check that function jsx:maps_support/0 returns false.

However, the following will detect maps support correctly.

rebar3 clean --all
rebar3 compile
rebar3 as prod release

[talentdeficit]

i haven't had a chance to test with otp20 yet but i can't reproduce this with 19.x

does JSX_FORCE_MAPS=true rebar3 as prod release work?

[leoliu]

no. It appears rebar.config.script is by-passed.

[paulo-ferraz-oliveira]

Is this still an issue in the newer rebar3 versions (e.g. latest)?

[leoliu]

maybe not since I haven't seen this issue for 2-3 years.