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Concurrent Renders (#1165)
* initial work on concurrent renders * concurrent renders * limit to 3.11 * fix docs * update changelog * simpler add_effect interface * improve docstring * better changelog description * effect function accepts stop event * simplify concurrent render process * test serial renders too * remove ready event * fix doc example * add docstrings * use function scope async fixtures * fix flaky test * rename config option * move effect kick-off into component did render * move effect start to back to layout render * try 3.x again * require tracerite 1.1.1 * fix docs build
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‎.github/workflows/.hatch-run.yml‎

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name: hatch-run
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on:
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workflow_call:
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inputs:
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job-name:
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required: true
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type: string
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hatch-run:
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required: true
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type: string
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runs-on-array:
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required: false
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type: string
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default: '["ubuntu-latest"]'
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python-version-array:
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required: false
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type: string
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default: '["3.x"]'
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node-registry-url:
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required: false
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type: string
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default: ""
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secrets:
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node-auth-token:
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required: false
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pypi-username:
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required: false
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pypi-password:
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required: false
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workflow_call:
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inputs:
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job-name:
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required: true
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type: string
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hatch-run:
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required: true
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type: string
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runs-on-array:
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required: false
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type: string
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default: '["ubuntu-latest"]'
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python-version-array:
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required: false
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type: string
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default: '["3.x"]'
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node-registry-url:
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required: false
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type: string
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default: ""
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secrets:
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node-auth-token:
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required: false
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pypi-username:
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required: false
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pypi-password:
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required: false
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jobs:
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hatch:
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name: ${{ format(inputs.job-name, matrix.python-version, matrix.runs-on) }}
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strategy:
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matrix:
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python-version: ${{ fromJson(inputs.python-version-array) }}
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runs-on: ${{ fromJson(inputs.runs-on-array) }}
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runs-on: ${{ matrix.runs-on }}
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steps:
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- uses: actions/checkout@v2
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- uses: actions/setup-node@v2
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with:
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node-version: "14.x"
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registry-url: ${{ inputs.node-registry-url }}
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- name: Pin NPM Version
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run: npm install -g npm@8.19.3
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- name: Use Python ${{ matrix.python-version }}
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uses: actions/setup-python@v2
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with:
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python-version: ${{ matrix.python-version }}
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- name: Install Python Dependencies
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run: pip install hatch poetry
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- name: Run Scripts
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env:
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NODE_AUTH_TOKEN: ${{ secrets.node-auth-token }}
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PYPI_USERNAME: ${{ secrets.pypi-username }}
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PYPI_PASSWORD: ${{ secrets.pypi-password }}
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run: hatch run ${{ inputs.hatch-run }}
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hatch:
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name: ${{ format(inputs.job-name, matrix.python-version, matrix.runs-on) }}
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strategy:
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matrix:
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python-version: ${{ fromJson(inputs.python-version-array) }}
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runs-on: ${{ fromJson(inputs.runs-on-array) }}
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runs-on: ${{ matrix.runs-on }}
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steps:
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- uses: actions/checkout@v2
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- uses: actions/setup-node@v2
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with:
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node-version: "14.x"
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registry-url: ${{ inputs.node-registry-url }}
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- name: Pin NPM Version
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run: npm install -g npm@8.19.3
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- name: Use Python ${{ matrix.python-version }}
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uses: actions/setup-python@v2
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with:
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python-version: ${{ matrix.python-version }}
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- name: Install Python Dependencies
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run: pip install hatch poetry
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- name: Run Scripts
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env:
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NODE_AUTH_TOKEN: ${{ secrets.node-auth-token }}
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PYPI_USERNAME: ${{ secrets.pypi-username }}
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PYPI_PASSWORD: ${{ secrets.pypi-password }}
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run: hatch run ${{ inputs.hatch-run }}

‎.github/workflows/check.yml‎

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name: check
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on:
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push:
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branches:
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- main
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pull_request:
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branches:
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- main
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schedule:
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- cron: "0 0 * * 0"
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push:
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branches:
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- main
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pull_request:
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branches:
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- main
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schedule:
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- cron: "0 0 * * 0"
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jobs:
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test-py-cov:
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uses: ./.github/workflows/.hatch-run.yml
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with:
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job-name: "python-{0}"
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hatch-run: "test-py"
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lint-py:
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uses: ./.github/workflows/.hatch-run.yml
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with:
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job-name: "python-{0}"
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hatch-run: "lint-py"
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test-py-matrix:
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uses: ./.github/workflows/.hatch-run.yml
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with:
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job-name: "python-{0} {1}"
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hatch-run: "test-py --no-cov"
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runs-on-array: '["ubuntu-latest", "macos-latest", "windows-latest"]'
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python-version-array: '["3.9", "3.10", "3.11"]'
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test-docs:
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uses: ./.github/workflows/.hatch-run.yml
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with:
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job-name: "python-{0}"
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hatch-run: "test-docs"
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test-js:
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uses: ./.github/workflows/.hatch-run.yml
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with:
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job-name: "{1}"
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hatch-run: "test-js"
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lint-js:
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uses: ./.github/workflows/.hatch-run.yml
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with:
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job-name: "{1}"
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hatch-run: "lint-js"
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test-py-cov:
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uses: ./.github/workflows/.hatch-run.yml
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with:
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job-name: "python-{0}"
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hatch-run: "test-py"
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lint-py:
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uses: ./.github/workflows/.hatch-run.yml
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with:
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job-name: "python-{0}"
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hatch-run: "lint-py"
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test-py-matrix:
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uses: ./.github/workflows/.hatch-run.yml
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with:
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job-name: "python-{0} {1}"
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hatch-run: "test-py --no-cov"
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runs-on-array: '["ubuntu-latest", "macos-latest", "windows-latest"]'
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python-version-array: '["3.9", "3.10", "3.11"]'
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test-docs:
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uses: ./.github/workflows/.hatch-run.yml
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with:
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job-name: "python-{0}"
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hatch-run: "test-docs"
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# as of Dec 2023 lxml does have wheels for 3.12
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# https://bugs.launchpad.net/lxml/+bug/2040440
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python-version-array: '["3.11"]'
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test-js:
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uses: ./.github/workflows/.hatch-run.yml
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with:
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job-name: "{1}"
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hatch-run: "test-js"
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lint-js:
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uses: ./.github/workflows/.hatch-run.yml
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with:
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job-name: "{1}"
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hatch-run: "lint-js"

‎docs/source/about/changelog.rst‎

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- :pull:`1118` - `module_from_template` is broken with a recent release of `requests`
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- :pull:`1131` - `module_from_template` did not work when using Flask backend
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**Added**
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- :pull:`1165` - Allow concurrent renders of discrete component tree - enable this
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experimental feature by setting `REACTPY_ASYNC_RENDERING=true`. This should improve
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the overall responsiveness of your app, particularly when handling larger renders
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that would otherwise block faster renders from being processed.
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v1.0.2
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------

‎src/py/reactpy/pyproject.toml‎

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sanic = [
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"sanic >=21",
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"sanic-cors",
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"tracerite>=1.1.1",
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"setuptools",
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"uvicorn[standard] >=0.19.0",
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]
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fastapi = [
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dependencies = [
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"coverage[toml]>=6.5",
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"pytest",
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"pytest-asyncio>=0.17",
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"pytest-asyncio>=0.23",
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"pytest-mock",
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"pytest-rerunfailures",
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"pytest-timeout",

‎src/py/reactpy/reactpy/_option.py‎

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def current(self, new: _O) -> None:
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self.set_current(new)
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@current.deleter
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def current(self) -> None:
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self.unset()
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def subscribe(self, handler: Callable[[_O], None]) -> Callable[[_O], None]:
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"""Register a callback that will be triggered when this option changes"""
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if not self.mutable:
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msg = f"{self} cannot be modified after initial load"
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raise TypeError(msg)
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old = self.current
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delattr(self, "_current")
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if hasattr(self, "_current"):
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delattr(self, "_current")
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if self.current != old:
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for sub_func in self._subscribers:
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sub_func(self.current)

‎src/py/reactpy/reactpy/backend/hooks.py‎

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from typing import Any
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from reactpy.backend.types import Connection, Location
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from reactpy.core.hooks import Context, create_context, use_context
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from reactpy.core.hooks import create_context, use_context
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from reactpy.core.types import Context
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# backend implementations should establish this context at the root of an app
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ConnectionContext: Context[Connection[Any] | None] = create_context(None)

‎src/py/reactpy/reactpy/config.py‎

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validator=float,
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)
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"""A default timeout for testing utilities in ReactPy"""
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REACTPY_ASYNC_RENDERING = Option(
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"REACTPY_CONCURRENT_RENDERING",
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default=False,
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mutable=True,
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validator=boolean,
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)
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"""Whether to render components concurrently. This is currently an experimental feature."""

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