code: function updateProductEdits( edits, productId, doUpdate ) {
  	const prevEdits = edits || [];
  	let found = false;
  
  	const newEdits = prevEdits.map( productEdits => {
  		if ( isEqual( productId, productEdits.productId ) ) {
  			found = true;
  			return doUpdate( productEdits );
  		}
  		return productEdits;
  	} );
  
  	if ( ! found ) {
  		newEdits.push( doUpdate( undefined ) );
  	}
  
  	return newEdits;
  }
docs: Updates an edits object for a specific product.
  
  The main edits state contains an array of edits object, one for each
  product to be edited. The edits object for a product is in this format:
  
  ```
  {
  productId: <Number|Object>,
  creates: [ {<new variation object>} ]
  updated: [ {<variation props to update>} ]
  deletes: [ <variation id> ]
  }
  ```
  
  @param {Object} edits The state at `woocommerce.ui.products.variations.edits`
  @param {Number|Object} productId The id of product edits object to be updating.
  @param {Function} doUpdate ( productEdits ) Called with previous product edits, takes return as new product edits.
  @return {Object} The new, updated product edits to be used in state.