26 lines
1 KiB
Markdown
26 lines
1 KiB
Markdown
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## Style Guide
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* Use `for ... of` whenever possible
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**Rationale:** `for ... of` is awesome. It's more readable than any other variant.
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* Don't use `any` as much as possible
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**Rationale:** The language is called *Type*Script, not *Untyped*Script. :wink: Static typing is wonderful. It catches bugs and improves readability. We should strive to use it as much as possible.
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* Use `const` wherever possible.
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**Rationale:** Instead of reading `const` as "constant value," read it as "single assignment." Yes, it means "constant value" in other programming languages, but it's a little different in JavaScript.
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* When we can't use `const`, use `let`; never `var`
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**Rationale:** `var` trips up programmers in a number of cases - hoisting and closure capture are two big ones. Consider the difference between
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`for (var j = 0; j < 5; j++) { setTimeout(() => console.log(j), 5) }`
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and
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`for (let j = 0; j < 5; j++) { setTimeout(() => console.log(j), 5) }`
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Even if you're not capturing the variable, who knows if someone else might later?
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