Minifier rule proposal: mangle private fileds and methods in class

[Brooooooklyn]

Describe the feature

class WhatEver {
  private someThingUsedInternalOnlyButVeryLongLikeObjectiveCStyle = 0

  public thePublicMethodShouldNotBeMangled() {
    this.privateClassMethodNameShouldAlsoBeMangled()
    return this.someThingUsedInternalOnlyButVeryLongLikeObjectiveCStyle
  }

  private privateClassMethodNameShouldAlsoBeMangled() {
    this.someThingUsedInternalOnlyButVeryLongLikeObjectiveCStyle += 1
  }
}

↓ ↓ ↓ ↓ ↓ ↓

class A {
  private a = 0
  thePublicMethodShouldNotBeMangled() {
    this.b()
    return this.a
  }

  b() {
    this.a += 1
  }
}

This should be an optional rule, it's very dangerous, but very useful.

[kdy1]

I agree that this would be useful. Marking private methods using special Mark within typescript pass and using the info from the minifier will work.

The logic for private properties (from ecmascript spec) can be applied to such nodes.

[chocolateboy]

Related TypeScript proposals:

• https://github.com/microsoft/TypeScript/issues/8
• https://github.com/microsoft/TypeScript/issues/16037

And implementations:

• https://github.com/timocov/ts-transformer-minify-privates
• https://github.com/timocov/ts-transformer-properties-rename