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Joined 11 months ago
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Cake day: December 22nd, 2023

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  • My top 3 (as mainly JS dev) would be:

    1. Number overflow. It happens when you’re backend send big number ID serialized in a JSON. The solution is to wrap the number into a string when you know that can happens.
    JSON.parse('{"n": 123456789123456789012.0}').n
    // => 123456789123456800000
    
    1. Mutating an Object by ref (now I use Object.freeze a lot). Something like:
    const CONFIGURATION = { conf: { enabled: false } }
    // setup a "copy"
    let currentConfiguration = { ...CONFIGURATION }
    currentConfiguration.conf.enabled  = true
    // try to reset the conf
    currentConfiguration = { ...CONFIGURATION }
    // => { conf: { enabled: true } }
    
    1. Assignation instead of comparison (now my IDE warn me)
    if (foo = false) {
      // do something
    }