Intended for multi-level logging implementations, this transformer removes logging calls for selected log levels. For example, if our logger supports these levels: fine, debug, info, warn, we might want to remove fine & debug messages for production builds...

Which logging calls are to be elided can be configured via plugin options provided in .babelrc. See example below. By default only fine & debug calls are removed.

For each log level, the following call patterns are matched:

• logger.<level>(...)
• LOGGER.<level>(...)
• *.logger.<level>(...)
• *.LOGGER.<level>(...)
• *.*.logger.<level>(...)
• *.*.LOGGER.<level>(...)

$ npm install babel-plugin-transform-remove-logger

.babelrc

{
  "plugins": ["transform-remove-logger"]
}

...or with options:

{
  "plugins": [["transform-remove-logger", { levels: "fine,debug" }]]
}

$ babel --plugins transform-remove-logger script.js

require("babel-core").transform("code", {
  plugins: ["transform-remove-logger"]
});

© 2017 Karsten Schmidt, MIT licensed