Allow webpack module to search by props in functions

[colin273]

Describe the bug

Currently, the webpack searcher only looks for props in objects, ignoring functions. This makes it needlessly verbose to search for modules such as moment.js (see #439), where useful props are on the top-level moment() function (the only export of its module) rather than an object.

Reproduction steps

1. Try to search for moment.js using replugged.webpack.getByProps("isMoment")
2. Fail
3. Use replugged.webpack.getModule(m => typeof m.exports === "function" && m.exports.isMoment) to get moment.js
4. Grumble about how relatively tedious that is

Expected behavior

getByProps should find moment.js

Actual behavior

getByProps returns undefined

Additional information

Should be fixed soon-ish in the webpack-sanity branch, whenever that makes it to the PR stage

Please confirm the following

• [X] I checked if Discord and Replugged are up to date
• [X] I made sure this is not related to an external plugin or a theme
• [X] I searched the issues to make sure this bug has not been reported before.

[yofukashino]

try webpack.getBySource("parseTwoDigitYear")

[colin273]

Searching by source is a last resort (and I mean LAST) for when the props or more reliable criteria aren't available, and in the case of moment.js they are very much available.

[yofukashino]

Will this be adding support for prototype of the function too?

[colin273]

Searching by prototype is out of scope for #450, since that PR is aimed at cleaning up and upgrading existing APIs rather than adding new ones. New webpack filters will need to be added in a separate PR.