Parking Mandates Map

This code runs the Mandates Map app for the Parking Reform Network: https://parkingreform.org/mandates-map/.

We do not use frameworks like React or Svelte to keep things simple. However, we do use these techniques:

TypeScript
Sass and the folder src/css/theme, which should stay aligned with https://github.com/ParkingReformNetwork/parking-lot-map
Reactive state management - see State diagram

The main files are index.html, src/js/main.ts, and data/*.json. main.ts will load the JSON data to load all our data.

Developing the map app

Prerequisites:

Install Node Package Manager (npm).

If you are using Windows OS, install Windows Subsystem for Linux (WSL). Currently, there are 2 versions out. WSL 1 will run npm way faster¹. You can switch to version 1 with wsl --set-version Ubuntu 1. Run all npm commands in wsl/Ubuntu.

Run npm i in the main folder.

Start the development server

❯ npm start

Then open http://127.0.0.1:1234 in a browser. Hit CTRL-C to stop the development server.

When the server is running, you can make any changes you want to the project. Reload the page in the browser to see those changes. (You may need to force reload, e.g. hold the shift key while reloading on macOS.)

Check type compilation

We write our code in TypeScript. The types are ignored when starting the server and running tests, but it's useful to manually check for any errors caught by TypeScript:

❯ npm run check

Run tests

❯ npm test

If the tests are taking a long time to start, run rm -rf .parcel-cache and try the tests again.

Autoformat code

We use Prettier to nicely format code.

❯ npm run fmt

Before pushing code, run this command and commit the changes. Otherwise, PR checks will not pass.

Lint code

"Linting" means using tools that check for common issues that may be bugs or low code quality.

❯ npm run lint

Try out a build locally

You can preview what a build will look like by running npm run build. Then use npm run serve-dist to start the server. A 'build' are the files sent for production on the real site. This is slightly different from the development server run by npm start, which prioritizes a quick start for development.

npm run test-dist will be implemented soon, while npm test is the development equivalent.

Staging

We use continuous deployment, meaning that we re-deploy the site every time we merge a pull request to staging at https://parkingreform.org/mandates-map-staging/. You can check how the site renders about ~1-2 minutes after your change merges.

Deploy the site to prod

First, check that staging looks good at https://parkingreform.org/mandates-map-staging/.

Then, when ready, click "Run workflow" at https://github.com/ParkingReformNetwork/reform-map/actions/workflows/deploy-map-prod.yaml with the default option. Check that the deploy worked by confirming https://parkingreform.org/mandates-map/ looks good.

Updating the data

You usually should not need to manually do this. We have a GitHub Action that runs every night to open a PR with any updates.

You can trigger the GitHub Action to run early by clicking "Run workflow" at https://github.com/ParkingReformNetwork/reform-map/actions/workflows/update-data.yaml with the default option, if you're an admin. This will create a pull request that you then need to merge.

To instead manually update the data, first run npm install. Then, run either:

npm run update-map-data, or
npm run sync-extended-data.

Update latitude and longitude

Update https://docs.google.com/spreadsheets/d/15L8hwNEi13Bov81EulgC8Xwt9_wCgofwcH49xHoNlKI/edit#gid=0. Our nightly cron job will open a PR to sync the updates.

State diagram

This shows all possible user interactions on the map, and what triggers what.

graph TD
    A[about icon]
    B[about popup]
    C[about popup close icon]
    D[click outside popup]

    E[zoom buttons]
    F[zoom level]

    G[map position]
    H[user scrolling]

    K[filter popup]
    L[filter icon]
    M[click outside popup]

    N[search popup]
    O[search icon]
    P[click outside popup]

    Q[table entries]

    R[table sorting]
    S[user interaction]

    T[counter text]
    AE[AND]

    U[filter value]
    V[user interaction]

    X[search value]
    Y[user input]

    Z[view icon]
    AA[view: map-table]

    AB[selected cities]
    AC[AND]

    AD[shown cities]

    AF[scorecard]
    AG[clicking city dot]
    AH[clicking outside popup]

    %% Relationships
    Z -->|toggles| AA

    S -->|controls| R

    A -->|toggles| B
    C -->|closes| B
    D -->|closes| B

    L -->|toggles| K
    M -->|closes| K

    O -->|toggles| N
    P -->|closes| N

    E -->|controls| F
    X -->|resets| F

    H -->|controls| G
    X -->|resets| G

    Y -->|controls| X

    V -->|controls| U

    X --> AC
    U --> AC
    AC -->|controls| AB

    AB -->|controls| Q
    AB -->|controls| AD

    X --> AE
    U --> AE
    AB --> AE
    AE -->|controls| T

    AG -->|opens up| AF
    AH -->|closes| AF
    X -->|opens up| AF
    AF -->|resets on close| X

We use reactive programming for state management. See https://github.com/ParkingReformNetwork/parking-lot-map/blob/main/README.md#state-diagram for an explanation.

ParkingReformNetwork / reform-map

readme