Bump rollup from 2.77.0 to 4.9.1 #856

	name: Typedoc CI

	on: [push]

	jobs:
	tests:
	name: TypeDoc integration
	runs-on: ubuntu-latest
	strategy:
	fail-fast: False
	matrix:
	typedoc-version:
	- latest
	- '~0.22.0'
	steps:
	- uses: actions/checkout@v1
	- name: Use Node.js
	uses: actions/setup-node@v1
	with:
	node-version: 14.x
	- name: Install dependencies
	run: yarn --frozen-lockfile --ignore-optional
	env:
	CI: true
	- name: Build
	run: yarn build
	env:
	CI: true
	- name: Link
	run: yarn link
	- name: TypeDoc integration test
	run: \|
	cd ~ && mkdir -p example/src && cd example
	yarn init -y
	yarn add -D typescript typedoc@${{ matrix.typedoc-version }}
	echo '{"compilerOptions": {"target": "es5","module": "commonjs","lib": ["es2015"],"strict": true,"esModuleInterop": true,"forceConsistentCasingInFileNames": true}}' >> tsconfig.json
	echo 'export class HelloWorld {}' >> src/hello-world.ts
	yarn link typedoc-plugin-mermaid
	yarn run typedoc --plugin typedoc-plugin-mermaid \
	--out docs \
	src/hello-world.ts

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