Why is there a judgment statement like the following in the react source code? (if ("development"! = "production") {.}
I can"t figure it out even though I"ve been going through it for most of the day. Is there any point in this? And the source code is full of this judgment.
react version 15.6
these are compiled and generated, and only code that has not been confused is like this, and the code after UglifyJS processing will remove these. The real source code should be something like this:
if (process.env.NODE_ENV !== 'production'){}this version of React defaults to development mode, and you need to specify NODE_ENV if you publish. In addition, you can dispose of the code through UglifyJS. Or you can directly refer to the confused code:
const React = require('react/dist/react.min.js');has two uses
We can also use this when we do our own development, output debugging information in the development environment, but no longer output some information in the production environment.
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