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import { spawnSync } from "node:child_process";
import { BuildCommand } from "./build-layer";
export class PublishCommand extends BuildCommand {
static summary = "Publish a custom Lambda layer for Bun.";
#aws(args: string[]): string {
this.debug("$", "aws", ...args);
const { status, stdout, stderr } = spawnSync("aws", args, {
stdio: "pipe",
});
const result = stdout.toString("utf-8").trim();
if (status === 0) {
return result;
}
const reason = stderr.toString("utf-8").trim() || result;
throw new Error(`aws ${args.join(" ")} exited with ${status}: ${reason}`);
}
async run() {
const { flags } = await this.parse(PublishCommand);
this.debug("Options:", flags);
try {
const version = this.#aws(["--version"]);
this.debug("AWS CLI:", version);
} catch (error) {
this.debug(error);
this.error(
"Install the `aws` CLI to continue: https://docs.aws.amazon.com/cli/latest/userguide/getting-started-install.html",
{ exit: 1 },
);
}
const { layer, region, arch, output, public: isPublic } = flags;
if (region.includes("*")) {
// prettier-ignore
const result = this.#aws([
"ec2",
"describe-regions",
"--query", "Regions[].RegionName",
"--output", "json"
]);
region.length = 0;
for (const name of JSON.parse(result)) {
region.push(name);
}
} else if (!region.length) {
// prettier-ignore
region.push(this.#aws([
"configure",
"get",
"region"
]));
}
this.log("Publishing...");
for (const regionName of region) {
for (const layerName of layer) {
// prettier-ignore
const result = this.#aws([
"lambda",
"publish-layer-version",
"--layer-name", layerName,
"--region", regionName,
"--description", "Bun is an incredibly fast JavaScript runtime, bundler, transpiler, and package manager.",
"--license-info", "MIT",
"--compatible-architectures", arch === "x64" ? "x86_64" : "arm64",
"--compatible-runtimes", "provided.al2", "provided",
"--zip-file", `fileb://${output}`,
"--output", "json",
]);
const { LayerVersionArn } = JSON.parse(result);
this.log("Published", LayerVersionArn);
if (isPublic) {
// prettier-ignore
this.#aws([
"lambda",
"add-layer-version-permission",
"--layer-name", layerName,
"--region", regionName,
"--version-number", LayerVersionArn.split(":").pop(),
"--statement-id", `${layerName}-public`,
"--action", "lambda:GetLayerVersion",
"--principal", "*",
]);
}
}
}
this.log("Done");
}
}
await PublishCommand.run(process.argv.slice(2));
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