celscript — TypeScript subset → Google CEL

Define a Context type, then write a TypeScript expression against it. The compiled CEL appears below.

Examples:

Theme:

Context (TypeScript)Top-level fields are destructured into scope in the body below

Body — expressionIn scope: user, req, roles — A single expression. For statements (switch, loops, const), wrap them in a zero-arg IIFE: `(() => { … })()`.

No problems detected

Compiled CEL (read-only)

Decision tree (outer branching)

Explanation

an advanced condition (

{
  const { user, req, roles } = ctx;
  return user.role === "admin" ||
(user.age >= 18 &&
  req.method === "GET" &&
  roles.some((r) => r === "reader"));
}

)

Parts of this rule are shown as code because they have no plain-language template yet.