Extend documentation for bundle files

[CarstenGrohmann]

Hello Jacques,

please add this small example of using another JS bundler as a additional post-processing step to the "Mixed Examples" section inintegration_javascript.rst.

Example: Using a Javascript bundler in post-processing

Besides the complete integration of a JS bundler into the development chain, it can be easier for small projects to use an external bundler in a post-processing step.

Example: Call from commandline

# rollup --format=umd --name MyProject --file=MyProject.js -- __target__/MyProject.js

__target__/MyProject.js → MyProject.js...
(!) Circular dependency
__target__/re.js -> __target__/re.translate.js -> __target__/re.js
created MyProject.js in 612ms

Example: Integration in a Makefile

Example Makefile rule:

# tail Makefile
# Compile Python to JavaScript
build:
	transcrypt --build --map --nomin -e 6 MyProject.py
	rollup --format=umd --name MyProject --file=MyProject.js -- __target__/MyProject.js

Calling the Makefile rule:

# make build
transcrypt --build --map --nomin -e 6 MyProject.py

Transcrypt (TM) Python to JavaScript Small Sane Subset Transpiler Version 3.7.16
Copyright (C) Geatec Engineering. License: Apache 2.0


Saving target code in: /home/user/MyProject/__target__/org.transcrypt.__runtime__.js
Saving target code in: /home/user/MyProject/__target__/re.translate.js
Saving target code in: /home/user/MyProject/__target__/re.js
Saving target code in: /home/user/MyProject/__target__/MyProject.js

Ready

rollup --format=umd --name MyProject --file=MyProject.js -- __target__/MyProject.js

__target__/MyProject.js → MyProject.js...
(!) Circular dependency
__target__/re.js -> __target__/re.translate.js -> __target__/re.js
created MyProject.js in 509ms

Kind regards, Carsten