Use more accurate names for some of the interpreted fields

src/index.js

@@ -54,12 +54,12 @@ function parseDerivation(text) {
 
 	return {
 		outputs: mapArray(root.items[0], (item) => {
-			return mapTuple(item, ["name", "path", "hashAlgorithm", "hash"]);
+			return mapTuple(item, ["name", "path", "expectedHashAlgorithm", "expectedHash"]);
 		}),
 		inputDerivations: mapArray(root.items[1], (item) => {
-			return mapTuple(item, ["path", "inputDerivations"], (value, i) => {
+			return mapTuple(item, ["path", "wantedOutputs"], (value, i) => {
 				if (i === 1) {
-					/* An `array` of inputDerivations */
+					/* An `array` of outputs */
 					return value.items;
 				} else {
 					return value;