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@bufbuild/cel

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A CEL evaluator for ECMAScript

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// Copyright 2024-2025 Buf Technologies, Inc. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. import { isCelError } from "./error.js"; import { toCel } from "./value.js"; export class ObjectActivation { constructor(data) { this.data = data; } resolve(name) { const value = this.data[name]; if (value === undefined) { return undefined; } if (isCelError(value)) { return value; } return toCel(value); } } export class VarActivation { constructor(name, value, parent) { this.name = name; this.value = value; this.parent = parent; } resolve(name) { if (name === this.name) { return this.value; } return this.parent.resolve(name); } } export const EMPTY_ACTIVATION = { resolve() { return undefined; }, };