build

Build Skill

Use the following commands to build the Cosmos Explorer project. Choose the appropriate command based on the task.

Full Production Build

Run a complete production build (format check → lint → compile → strict compile → webpack prod → copy):

npm run build

CI Build (Faster)

Run a CI build that uses webpack dev mode for faster bundling:

npm run build:ci

TypeScript Compile Only

Run a TypeScript type-check without emitting output:

npm run compile

Strict TypeScript Compile

Run a strict null-checks compile on the subset of files in tsconfig.strict.json:

npm run compile:strict

Lint Only

Run ESLint across all .ts and .tsx files:

npm run lint

Format Check

Run Prettier to verify formatting without modifying files:

npm run format:check

Pre-Build: Check Dependencies

Before running any build command, check whether npm install needs to be run. Do this by comparing package.json and package-lock.json against the installed node_modules:

1. Check if the node_modules directory exists. If it does not, run npm install.
2. If node_modules exists, check whether package.json or package-lock.json have been modified more recently than node_modules. If so, run npm install.

# Check if node_modules is missing or outdated
if [ ! -d node_modules ] || [ package.json -nt node_modules ] || [ package-lock.json -nt node_modules ]; then
  npm install
fi

On Windows PowerShell:

if (-not (Test-Path node_modules) -or
    (Get-Item package.json).LastWriteTime -gt (Get-Item node_modules).LastWriteTime -or
    (Get-Item package-lock.json).LastWriteTime -gt (Get-Item node_modules).LastWriteTime) {
    npm install
}

Always run this check before proceeding with any build command.

Guidelines

• When asked to simply "build", run npm run build for a full production build.
• When asked for a quick or fast build, use npm run build:ci.
• When asked to just check types, use npm run compile.
• If the build fails, read the error output carefully. Common issues include:
  • TypeScript errors: Fix type errors shown in the npm run compile output.
  • Strict null-check errors: Fix strict errors shown in npm run compile:strict output.
  • Lint errors: Fix lint issues shown in npm run lint output.
  • Format errors: Run npm run format to auto-fix formatting, then retry the build.
• New files must be added to tsconfig.strict.json so they compile under strict mode.