@jsdevtools/npm-publish/lib/npm/use-npm-environment.js

Fast, easy publishing to NPM

import fs from "node:fs/promises";
import os from "node:os";
import path from "node:path";
/**
 * Create a temporary .npmrc file with the given auth token, and call a task
 * with env vars set to use that .npmrc.
 *
 * @param manifest Pacakge metadata.
 * @param options Configuration options.
 * @param task A function called with the configured environment. After the
 *   function resolves, the temporary .npmrc file will be removed.
 * @returns The resolved value of `task`
 */
export async function useNpmEnvironment(manifest, options, task) {
    const { registry, token, logger, temporaryDirectory } = options;
    const { host, origin, pathname } = registry;
    const pathnameWithSlash = pathname.endsWith("/") ? pathname : `${pathname}/`;
    const config = [
        "; created by jsdevtools/npm-publish",
        `//${host}${pathnameWithSlash}:_authToken=\${NODE_AUTH_TOKEN}`,
        `registry=${origin}${pathnameWithSlash}`,
        "",
    ].join(os.EOL);
    const npmrcDirectory = await fs.mkdtemp(path.join(temporaryDirectory, "npm-publish-"));
    const npmrc = path.join(npmrcDirectory, ".npmrc");
    const environment = { NODE_AUTH_TOKEN: token, npm_config_userconfig: npmrc };
    await fs.writeFile(npmrc, config, "utf8");
    logger?.debug?.(`Temporary .npmrc created at ${npmrc}\n${config}`);
    try {
        return await task(manifest, options, environment);
    }
    finally {
        await fs.rm(npmrcDirectory, { force: true, recursive: true });
    }
}
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