feat: Add fixed-unit time format to JSON min/max output for use in (#157)

code.

minFormatted and maxFormatted add a bit of unnecessary overhead for
a consumer to do any logic or tracking of the min/max range (eg,
for telemetry).

Author: jdmarshall

lib/reporter/json.js

@@ -19,7 +19,9 @@ function toJSON(results) {
 		name: result.name,
 		runsSampled: result.runsSampled,
 		min: result.minFormatted,
+		minNS: result.min,
 		max: result.maxFormatted,
+		maxNS: result.max,
 		plugins: result.plugins.map((p) => p.report).filter(Boolean),
 		opsSec: result.opsSec,
 		totalTime: result.totalTime,

test/reporter.js

@@ -678,19 +678,11 @@ describe("custom reporter should have access to histogram data", async () => {
 	});
 });
 
-describe("jsonReport should produce valid JSON output", async () => {
-	let output = "";
+describe("toJSON", () => {
+	let results;
 
 	before(async () => {
-		const originalStdoutWrite = process.stdout.write;
-		process.stdout.write = (data) => {
-			output += data;
-		};
-
-		// Create a new Suite with the JSON reporter
-		const suite = new Suite({
-			reporter: jsonReport,
-		});
+		const suite = new Suite({});
 
 		suite
 			.add("single with matcher", () => {
@@ -710,25 +702,22 @@ describe("jsonReport should produce valid JSON output", async () => {
 			});
 
 		// Run the suite
-		await suite.run();
+		results = await suite.run();
+	});
 
-		// Restore stdout
-		process.stdout.write = originalStdoutWrite;
+	it("should run", () => {
+		toJSON(results);
 	});
 
 	it("should print valid JSON", () => {
-		// Verify if the output can be parsed as JSON
-		let data;
-		try {
-			data = JSON.parse(output);
-		} catch (err) {
-			assert.fail(`Output is not valid JSON: ${err.message}`);
-		}
+		const output = toJSON(results);
+		const data = JSON.parse(output);
 
 		assert.ok(Array.isArray(data), "Output should be an array of results");
 	});
 
 	it("should contain the required benchmark fields", () => {
+		const output = toJSON(results);
 		const data = JSON.parse(output);
 
 		// We expect the two benchmarks we added: 'single with matcher' and 'Multiple replaces'
@@ -746,15 +735,74 @@ describe("jsonReport should produce valid JSON output", async () => {
 				typeof entry.min === "string",
 				"min should be a string (formatted time)",
 			);
+			assert.ok(
+				typeof entry.minNS === "number",
+				"minNS should be a number (time in NS)",
+			);
 			assert.ok(
 				typeof entry.max === "string",
 				"max should be a string (formatted time)",
 			);
+			assert.ok(
+				typeof entry.maxNS === "number",
+				"maxNS should be a number (time in NS)",
+			);
 			assert.ok(Array.isArray(entry.plugins), "plugins should be an array");
 		}
 	});
 });
 
+describe("jsonReport", () => {
+	let output = "";
+
+	before(async () => {
+		const originalStdoutWrite = process.stdout.write;
+		process.stdout.write = (data) => {
+			output += data;
+		};
+
+		// Create a new Suite with the JSON reporter
+		const suite = new Suite({
+			reporter: jsonReport,
+		});
+
+		suite
+			.add("single with matcher", () => {
+				const pattern = /[123]/g;
+				const replacements = { 1: "a", 2: "b", 3: "c" };
+				const subject = "123123123123123123123123123123123123123123123123";
+				const r = subject.replace(pattern, (m) => replacements[m]);
+				assert.ok(r);
+			})
+			.add("Multiple replaces", () => {
+				const subject = "123123123123123123123123123123123123123123123123";
+				const r = subject
+					.replace(/1/g, "a")
+					.replace(/2/g, "b")
+					.replace(/3/g, "c");
+				assert.ok(r);
+			});
+
+		// Run the suite
+		await suite.run();
+
+		// Restore stdout
+		process.stdout.write = originalStdoutWrite;
+	});
+
+	it("should print valid JSON", () => {
+		// Verify if the output can be parsed as JSON
+		let data;
+		try {
+			data = JSON.parse(output);
+		} catch (err) {
+			assert.fail(`Output is not valid JSON: ${err.message}`);
+		}
+
+		assert.ok(Array.isArray(data), "Output should be an array of results");
+	});
+});
+
 describe("toCSV", () => {
 	it("should generate valid CSV output", async (t) => {
 		const result = toCSV([