Speed up snapshotting of many new dom nodes (#903)

* Speed up snapshotting of many new dom nodes

By avoiding reflow we shave about 15-25% off our snapshotting time

* Improve newlyAddedElement docs

* Optimize needMaskingText by using el.closest and less recursion

* Serve all rrweb dist files

* Split serializeNode into smaller functions

Makes it easier to profile

* Slow down cpu enhance tracing on fast machines

* Increase timeout

* Perf: only loop through ancestors when they have something to compare to

* Perf: `hasNode` is cheaper than `getMeta`

* Perf: If parents where already checked, no need to do it again

* Perf: reverse for loops are faster

Because they only do the .lenght check once. In this case I don't think we'll see much performance gains if any

* Clean up code

* Perf: check ancestors once with isBlocked

* guessing this might fixes canvas test

* Update packages/rrweb/src/record/observers/canvas/webgl.ts

Co-authored-by: yz-yu <yanzhen@smartx.com>

* Fix #904 (#906)

Properly remove crossorigin attribute

* Bump minimist from 1.2.5 to 1.2.6 (#902)

Bumps [minimist](https://github.com/substack/minimist) from 1.2.5 to 1.2.6.
- [Release notes](https://github.com/substack/minimist/releases)
- [Commits](https://github.com/substack/minimist/compare/1.2.5...1.2.6)

---
updated-dependencies:
- dependency-name: minimist
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Co-authored-by: yz-yu <yanzhen@smartx.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.eslintrc.js

@@ -16,6 +16,8 @@ module.exports = {
     tsconfigRootDir: __dirname,
     project: ['./tsconfig.eslint.json', './packages/*/tsconfig.json'],
   },
-  plugins: ['@typescript-eslint'],
-  rules: {},
+  plugins: ['@typescript-eslint', 'eslint-plugin-tsdoc'],
+  rules: {
+    'tsdoc/syntax': 'warn',
+  },
 };