René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"upload-sarif: Better error message when `run.results` is missing","articleBody":"Some third-party SARIF producer tools incorrectly create a `run` without a `results` object when the tool succeeds and finds no results, when they should be populating `results` with an empty array. This is on the tool to fix, but we can provide a better error message in this case, instead of an unhelpful crash in the `upload-sarif` Action:\r\n\r\n```\r\nUploading sarif files: [\"filename.sarif\"]\r\nError: Cannot read property 'length' of undefined\r\nTypeError: Cannot read property 'length' of undefined\r\n  at countResultsInSarif (/home/runner/work/_actions/github/codeql-action/v1/lib/upload-lib.js:121:35)\r\n  at uploadFiles (/home/runner/work/_actions/github/codeql-action/v1/lib/upload-lib.js:214:30)\r\n  at Object.uploadFromActions (/home/runner/work/_actions/github/codeql-action/v1/lib/upload-lib.js:91:18)\r\n  at processTicksAndRejections (internal/process/task_queues.js:93:5)\r\n  at async run (/home/runner/work/_actions/github/codeql-action/v1/lib/upload-sarif-action.js:34:29)\r\n  at async runWrapper (/home/runner/work/_actions/github/codeql-action/v1/lib/upload-sarif-action.js:46:9)\r\n```","author":{"url":"https://github.com/adityasharad","@type":"Person","name":"adityasharad"},"datePublished":"2021-03-15T19:44:44.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":3},"url":"https://github.com/420/codeql-action/issues/420"}