color-math/src/nodes/UnaryExpr.js

expressions to manipulate colors

import OperationExpr from './OperationExpr'

export default class UnaryExpr extends OperationExpr {
  constructor(value, operator, options, $loc) {
    super('unary', operator, options, $loc)

    this.value = value
  }

  _evaluateInternal(e) {
    return e.evalUnaryOperation(this)
  }
}