drizzle-orm/entity.js

Drizzle ORM package for SQL databases

const entityKind = Symbol.for("drizzle:entityKind");
const hasOwnEntityKind = Symbol.for("drizzle:hasOwnEntityKind");
function is(value, type) {
  if (!value || typeof value !== "object") {
    return false;
  }
  if (value instanceof type) {
    return true;
  }
  if (!Object.prototype.hasOwnProperty.call(type, entityKind)) {
    throw new Error(
      `Class "${type.name ?? "<unknown>"}" doesn't look like a Drizzle entity. If this is incorrect and the class is provided by Drizzle, please report this as a bug.`
    );
  }
  let cls = Object.getPrototypeOf(value).constructor;
  if (cls) {
    while (cls) {
      if (entityKind in cls && cls[entityKind] === type[entityKind]) {
        return true;
      }
      cls = Object.getPrototypeOf(cls);
    }
  }
  return false;
}
export {
  entityKind,
  hasOwnEntityKind,
  is
};
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