mangle.json

{
  "help": {
    "what is this file?": "It controls protected/private property mangling so that minified builds have consistent property names.",
    "why are there duplicate minified properties?": "Most properties are only used on one type of objects, so they can have the same name since they will never collide. Doing this reduces size."
  },
  "minify": {
    "mangle": {
      "keep_classnames": true,
      "properties": {
        "regex": "^_[^_]",
        "reserved": [
          "__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED",
          "__REACT_DEVTOOLS_GLOBAL_HOOK__",
          "__PREACT_DEVTOOLS__",
          "_renderers",
          "_"
        ]
      }
    },
    "compress": {
      "reduce_funcs": false
    }
  },
  "props": {
    "cname": 6,
    "props": {
      "$_value": "_v",
      "$_deps": "_d",
      "$_subs": "_s",
      "$_pending": "_p",
      "$_updater": "_u",
      "$_setCurrent": "_",
      "$_activate": "_a",
      "$_isComputing": "_c",
      "$_readonly": "_r",
      "$_requiresUpdate": "_q",
      "$_props": "__"
    }
  }
}