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Update define-constant.md

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Jarred Sumner
2024-04-23 14:37:32 -07:00
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docs/guides/runtime/define-constant.md
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@@ -136,21 +136,7 @@ console.log("Hello, world!");
## How is this different than setting a variable?
You can also set `process.env.NODE_ENV` to `"production"` in your code, but that won't help with dead code elimination.
```ts
// In JavaScript, property accesses can have side effects
// getters & setters can be functions, and even dynamically defined (due to prototype chains and Proxy)
// Even if you set process.env.NODE_ENV to "production", on the next line
// It is not safe for static analysis tools to assume that process.env.NODE_ENV is "production".
process.env.NODE_ENV = "production";
if (process.env.NODE_ENV === "production") {
console.log("Production mode");
} else {
console.log("Development mode");
}
```
You can also set `process.env.NODE_ENV` to `"production"` in your code, but that won't help with dead code elimination. In JavaScript, property accesses can have side effects. Getters & setters can be functions, and even dynamically defined (due to prototype chains and Proxy). Even if you set `process.env.NODE_ENV to "production"`, on the next line, it is not safe for static analysis tools to assume that `process.env.NODE_ENV` is `"production"`.
## How is this different than find-and-replace or string replacement?