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Typed wrapping of Js values. #60

Merged
merged 8 commits into from
Oct 12, 2018
Merged

Typed wrapping of Js values. #60

merged 8 commits into from
Oct 12, 2018

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cristianoc
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Experimental feature supporting typed wrappers for JS values.
Uses a controlled form of cyclic dependencies between the .bs.js and .re.js/.tsx files.
Generates conversion functions as well as type checking functions with comments indicating where to look in order to resolve type inconsistencies.

A small demo: https://youtu.be/9YeOwMmXGfo

Mock up generated filed that wrap JS functions.
Add a new annotation to test typed wrappings of JS values.
These new wrappers go in the opposite direction than the other ones, and require the generated (.re.js/.tsx) file to call the bucklescript (.bs.js) file.
This implies circular dependencies between these two pairs of files. A special category of early requires and exports is reserved to emit all the requires from .re.js/.tsx to .bs.js early. In this way, when these wrappers are used in the .bs.js file, they will have been exported already.
Changed import logic: TS uses import {... as ...}, Flow uses require.
Add a more complex example also involving a conversion of record types.
@cristianoc cristianoc merged commit 501cb91 into master Oct 12, 2018
@cristianoc cristianoc deleted the wrap_js_functions branch October 12, 2018 12:39
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