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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"node 12.11.0: Scientific \u0026 Engineering notation NumberFormat bug","articleBody":"* **Version**: v12.11.0\r\n* **Platforms**:\r\n  - Windows Server 2019 x64\r\n    ```\r\n    v10.0.17763.737\r\n    ```\r\n\r\n  - Debian via Windows Subsystem for Linux (WSL)\r\n\r\n    ```\r\n    Linux WIN-RB75RCSBNFD 4.4.0-17763-Microsoft #379-Microsoft Wed Mar 06 19:16:00 PST 2019 x86_64 GNU/Linux\r\n    ```\r\n* **Subsystem**: icu\r\n\r\n  ```   \r\n  {\r\n    node: '12.11.0',\r\n    v8: '7.7.299.11-node.12',\r\n    uv: '1.32.0',\r\n    zlib: '1.2.11',\r\n    brotli: '1.0.7',\r\n    ares: '1.15.0',\r\n    modules: '72',\r\n    nghttp2: '1.39.2',\r\n    napi: '5',\r\n    llhttp: '1.1.4',\r\n    http_parser: '2.8.0',\r\n    openssl: '1.1.1c',\r\n    cldr: '35.1',\r\n    icu: '64.2',\r\n    tz: '2019a',\r\n    unicode: '12.1'\r\n  }\r\n  ```\r\n---\r\n\r\nThis was tested in the REPL with PowerShell on Windows and Bash on WSL Debian. They both have the same problem.\r\n\r\n**IN**\r\n```\r\nconst formatter = Intl.NumberFormat('en', {style: 'unit', unit: 'meter-per-second', notation: 'scientific'});\r\n```\r\nor\r\n```\r\nconst formatter = Intl.NumberFormat('en', {style: 'unit', unit: 'meter-per-second', notation: 'engineering'});\r\n```\r\nand\r\n```\r\nformatter.format(299792458);\r\n```\r\n\r\n**OUT**\r\n```\r\nTypeError: Internal error. Icu error.\r\n```\r\n\r\n![engineering](https://user-images.githubusercontent.com/17770407/65774415-2f3e9b00-e10c-11e9-92b5-a0e4f62b2b26.png)\r\n\r\n\r\nThis is the same code used in the [Intl.NumberFormat](https://v8.dev/features/intl-numberformat) V8 docs.\r\n\r\nThis bug does not only arise when specifying notation as compact notation works without error.\r\n\r\n![compact](https://user-images.githubusercontent.com/17770407/65774424-3665a900-e10c-11e9-8321-72e444c01a99.png)\r\n","author":{"url":"https://github.com/DerekNonGeneric","@type":"Person","name":"DerekNonGeneric"},"datePublished":"2019-09-27T13:46:45.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":5},"url":"https://github.com/29734/node/issues/29734"}