René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"if-statements allow multiple arguments and don't check for constant conditions after the first argument","articleBody":"### 🔎 Search Terms\n\n\"if statement\", \"constant condition\"\n\n### 🕗 Version \u0026 Regression Information\n\n- This is the behavior in every version I tried, and I reviewed the FAQ for entries about common bugs\n\n\n### ⏯ Playground Link\n\nhttps://www.typescriptlang.org/play/?#code/MYewdgzgLgBBIFsCmBhAFk4BrAlmA5gGICuYwUO4MAvDABQAOAhgE5MICMAXHFC3vgA0MZmwQAmHtH4FhIBhXBMANgAVW7AMw0YfYkgCUNAHwwA3gCgY1mAHpbMACYhexAGZurNlkijEWYLos+gDcFgC+Fhb2MCoA7kwAnhAwbioQSMI+EMTKsCBucIioGNgCJGSKgfFJKTj4YCA+jhY4bnTwyOiYuAQV5JRgdABEouwcw8KjGhLDBsJpyhlGljYwEVExjkgMSGDbYPmB2bn5hZ0lPeWkA+Ct7RfdZX03VSNjnJMw02LiX4vLFZeawRIA\n\n### 💻 Code\n\n```ts\nconst someCheckingFunction = (param1: string, param2: string, optionalParam3 = true) =\u003e {\n    // do stuff\n    return true;\n}\n\n// always false, result of someCheckingFunction always ignored\nif(someCheckingFunction(\"param1\", \"param2\"), false) {\n    \n}\n\n// dependent on result of someCheckingFunction\nif(someCheckingFunction(\"param1\", \"param2\", false)) {\n    \n}\n```\n\n\n### 🙁 Actual behavior\n\nDue to a mistake in my bracket placement as seen in the example, I accidentally learned that multiple arguments in an if statement are possible.\n\nCurrently that means:\n1. only the last argument is used for the if statement check\n2. even for constant conditions there is not error visible\n\n### 🙂 Expected behavior\n\nWhat I would expect:\n1. don't allow multiple arguments, this only happens because someone made an error\n2. at least show an error if there is a constant condition\n\n### Additional information about the issue\n\n_No response_","author":{"url":"https://github.com/MajorMeerkatThe3rd","@type":"Person","name":"MajorMeerkatThe3rd"},"datePublished":"2024-12-19T16:06:43.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":8},"url":"https://github.com/60822/TypeScript/issues/60822"}