traceDependency

lib/serialize/primitives.js

@@ -84,7 +84,7 @@ function traceNumber(val, record) {
 	// `Object.is()` required to differentiate between 0 and -0
 	if (val < 0 || Object.is(val, -0)) {
 		record.name = `minus${-val}`;
-		record.extra = {positive: this.traceDependency(-val, record)};
+		record.extra = {positive: this.traceDependency(-val, null, null, record)};
 		return NEGATIVE_TYPE;
 	}
 
@@ -103,7 +103,7 @@ function traceNumber(val, record) {
 function traceBigInt(val, record) {
 	if (val < 0) {
 		record.name = `minusb${-val}`;
-		record.extra = {positive: this.traceDependency(-val, record)};
+		record.extra = {positive: this.traceDependency(-val, null, null, record)};
 		return NEGATIVE_TYPE;
 	}
 

lib/serialize/trace.js

@@ -142,6 +142,21 @@ module.exports = {
 	 */
 	getTraceStack() {
 		return `  ${this.traceStack.join('\n  ')}`;
+	},
+
+	/**
+	 * Trace dependency of record.
+	 * @param {*} val - Value which is dependency
+	 * @param {string} [name] - Name for var. Does not need to be valid JS identifier.
+	 *   Can be omitted for globals.
+	 * @param {string} [traceStackEntry] - Trace stack entry for debugging. Can be omitted for globals.
+	 * @param {Object} dependent - Record for dependent
+	 * @returns {Object} - Record
+	 */
+	traceDependency(val, name, traceStackEntry, dependent) {
+		const record = this.traceValue(val, name, traceStackEntry);
+		createDependency(dependent, record);
+		return record;
 	}
 };