* @param {*} event * @returns {event is GitHubPullRequestWebhookPayload}

* * @param {GitHubPullRequestWebhookPayload|GitHubPushWebhookPayload} event * @param {string} buildspec * @param {object} environmentVariables * @

* Recursively pages through all Parameter Store parameters under a given path * @param {string} path

* * @param {GitHubPullRequestWebhookPayload|GitHubPushWebhookPayload} event

* @param {object} environmentVariables - All environment variables present in a build result * @param {string} environmentVariableName - The name of

* Constructs a Slack message payload with information about stack parameter * changes, and interactive buttons to approve or reject a deploy. If ther

* Returns an object, where each key is the name of a parameter in Parameter * Store, and each value is the value of that parameter at the time * Clo

* Hits the GitHub repot contents API to determine if the commit that triggered * event supports the PRX CI system by looking for a buildspec.yml file

* Returns an array of all stacks that are related to some root stack through * nesting, including the root stack. The elements of the array are the o

* We'll want to trigger a build when actions on the pull request represent * a change that requires CI, such as opening, synchornizing, or moving fro

* Push events will get delivered for any branch. For pushes to pull requests, * there will be an additional `pull_request` event that we will use to

* Returns a multi-line string describing the parameters that have changed * @param {ParameterDeltas} deltas * @returns {String}

* `startBuild` returns a Build object * https://docs.aws.amazon.com/codebuild/latest/APIReference/API_Build.html * @param {string} ciContentsRespons

* Updates a Parameter Store parameter with the given value, if the parameter * appears to be one that should be updated when new code artifacts are c

* @param {string} stackName * @param {string} changeSetName * @returns {Promise<DescribeChangeSetOutput[]>}

* @param {string} stackName * @returns {Promise<Stack[]>}