How to Free AWS Lambda Code Storage (CodeStorageExceeded)

aws_clear_old_lambda_versions.js

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

const awsCliGetCmd = ({ FunctionName = "", Version = "" }) => ({
  "list-functions": `aws lambda list-functions`,
  "list-versions-by-function": `aws lambda list-versions-by-function --function-name ${FunctionName}`,
  "delete-function": `aws lambda delete-function --function-name ${FunctionName} --qualifier ${Version}`
});

const run = async cmd => {
  const { stdout } = await execa.shell(cmd);

  return stdout;
};

(async () => {
  try {
    let res = await run(awsCliGetCmd({})["list-functions"]);
    const { Functions } = JSON.parse(res);
    const FunctionNames = Functions.map(f => f.FunctionName).filter(
      name => !name.includes("prod")
    );
    console.log(
      `found ${Functions.length} functions, and ${
        FunctionNames.length
      } match to clean old versions.`
    );
    for (let i = 0; i < FunctionNames.length; i++) {
      const FunctionName = FunctionNames[i];
      console.log(`list versions for: ${FunctionName}`);
      res = await run(
        awsCliGetCmd({ FunctionName })["list-versions-by-function"]
      );
      const { Versions } = JSON.parse(res);
      let oldOrUnuseVersions = [];
      if (Versions) {
        oldOrUnuseVersions = Versions.filter(f => f.Version != "$LATEST").map(
          f => f.Version
        );
      }
      console.log(
        `found ${Versions.length} versions, and ${
          oldOrUnuseVersions.length
        } match to delete.`
      );
      for (let j = 0; j < oldOrUnuseVersions.length; j++) {
        const Version = oldOrUnuseVersions[j];
        const delRes = await run(
          awsCliGetCmd({ FunctionName, Version })["delete-function"]
        );
      }
      console.log(
        `delete ${
          oldOrUnuseVersions.length
        } versions, for function: ${FunctionName}.`
      );
    }

  } catch (error) {
    console.log({ error });
  }
})();