Refactor: Rename "render" hooks to "visit" hooks

[yannbf]

This PR introduces a change in the test-runner where the hooks previously known as preRender and postRender now become preVisit and postVisit.

This is mostly to address concerns regarding confusion from users, who think that the test-runner is related to the rendering of stories. By renaming to "visit", we make it more explicit that the test-runner visits the story, and watches what it does, rather than do many things that will alter the rendering of a story.

There are no breaking changes, it's backwards compatible and the "render" hooks are deprecated and will alert the user to switch to the "visit" hooks.

Additionally, all of the documentation was changed to use Typescript.

📦 Published PR as canary version: 0.15.2--canary.394.e6df920.0

✨ Test out this PR locally via:

npm install @storybook/test-runner@0.15.2--canary.394.e6df920.0
# or 
yarn add @storybook/test-runner@0.15.2--canary.394.e6df920.0

Version

Published prerelease version: v0.15.2-next.1

Changelog

🐛 Bug Fix

• Refactor: Rename "render" hooks to "visit" hooks #394 (@yannbf)
• Docs: Update tags documentation #393 (@yannbf)

Authors: 1

• Yann Braga (@yannbf)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (d2665d1) 80.64% compared to head (e6df920) 80.64%.
Report is 2 commits behind head on next.

Additional details and impacted files

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##             next     #394   +/-   ##
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  Coverage   80.64%   80.64%           
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  Files          12       12           
  Lines         217      217           
  Branches       56       56           
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  Hits          175      175           
  Misses         42       42           

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🚀 PR was released in v0.15.2 🚀