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capability: on() without a function says what it got and what to pass

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The message read "the handler of TurnOn is a function", which states the
opposite of what went wrong. It is now
  on("TurnOff") got undefined as the handler: pass a function that takes
  the context of the directive
under the endpoint and the interface, as every DeclarationError.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
This commit is contained in:
David 2026-09-28 21:19:31 +00:00
parent 2f6730eb52
commit b083b23ab0
4 changed files with 11 additions and 5 deletions
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5
dist/esm/device/Capability.js vendored
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@ -33,8 +33,9 @@ export class Capability {
if (name !== "*" && this.descriptor.tier !== 3 && !names.includes(name)) {
throw new DeclarationError(this, `${name} is not a directive of the interface, which has ${names.join(", ") || "none"}`);
}
if (typeof handler !== "function")
throw new DeclarationError(this, `the handler of ${name} is a function`);
if (typeof handler !== "function") {
throw new DeclarationError(this, `on("${name}") got ${handler === null ? "null" : typeof handler} as the handler: pass a function that takes the context of the directive`);
}
this.handlers.set(name, handler);
return this;
}