scripts/version-update.js

#!/usr/bin/env node
// Copyright 2021 Google LLC
//
// 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.

/**
 * Adapted from
 * https://github.com/open-telemetry/opentelemetry-js/blob/stable/v1.0.0/scripts/version-update.js
 *
 * Run this from within the package root by setting it as a precompile script.
 * This will regenerate src/version.ts files as part of the build to always be
 * up to date.
 */

const fs = require("fs");
const path = require("path");

const packageJsonUrl = path.resolve(`${process.cwd()}/package.json`);
const pjson = require(packageJsonUrl);

const content = `// Copyright 2021 Google LLC
//
// 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.

// Autogenerated by scripts/version-update.js during compilation. Check this
// file in.
export const VERSION = '${pjson.version}';
`;

const fileUrl = path.join("src", "version.ts");

fs.writeFileSync(fileUrl, content);