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@bufbuild/protobuf

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A complete implementation of Protocol Buffers in TypeScript, suitable for web browsers and Node.js.

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// Copyright 2021-2025 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 { DurationSchema } from "./gen/google/protobuf/duration_pb.js"; import { create } from "../create.js"; import { protoInt64 } from "../proto-int64.js"; /** * Create a google.protobuf.Duration message from a Unix timestamp in milliseconds. */ export function durationFromMs(durationMs) { const sign = durationMs < 0 ? -1 : 1; const absDurationMs = Math.abs(durationMs); const absSeconds = Math.floor(absDurationMs / 1000); const absNanos = (absDurationMs - absSeconds * 1000) * 1000000; return create(DurationSchema, { seconds: protoInt64.parse(absSeconds * sign), nanos: absNanos === 0 ? 0 : absNanos * sign, // deliberately avoid signed 0 - it does not serialize }); } /** * Convert a google.protobuf.Duration to a Unix timestamp in milliseconds. */ export function durationMs(duration) { return Number(duration.seconds) * 1000 + Math.round(duration.nanos / 1000000); }