nanomath/src/core/Implementations.js

export class Implementations {
   constructor(impOrImps) {
      if (Array.isArray(impOrImps)) {
         this.matchers = impOrImps
      } else this.matchers = [impOrImps]
   }
}

export class ImplementationsGenerator {
   constructor(f) {
      this.generate = f
   }
}