Setup the steps to produce a better CSV parser from the naive one.

01-parse-a-csv-file/package.json

@@ -11,6 +11,7 @@
   "license": "BSD",
   "dependencies": {
     "csv-spectrum": "^1.0.0",
+    "deep-equal": "^2.0.5",
     "neat-csv": "^7.0.0"
   }
 }

01-parse-a-csv-file/step1.js

@@ -1,8 +1,13 @@
 import spectrum from "csv-spectrum";
 import csv from "neat-csv";
 
-spectrum(async (err, data) => {
-  for(let sample of data) {
-    console.log(await csv(sample.csv.toString()));
+spectrum(async (err, samples) => {
+
+  for(let sample of samples) {
+    const raw_csv = sample.csv.toString();
+    console.log("RAW CSV:\n", raw_csv);
+
+    const parsed = await csv(raw_csv);
+    console.log("PARSED:\n", parsed);
   }
 });

01-parse-a-csv-file/step2.js

@@ -0,0 +1,28 @@
+import spectrum from "csv-spectrum";
+
+/*
+ * A naive CVS parser to start comparing with the existing neat-csv
+ * parser.  This wrong for many CSV inputs, but you'll take this and
+ * work to make it behave as well as the neat-csv parser.
+ */
+const simple_parse = (raw_csv) => {
+  const rows = raw_csv.split("\n");
+  const result = [];
+
+  for(let row of rows) {
+    result.push(row.split(','));
+  }
+
+  return result;
+}
+
+
+spectrum(async (err, samples) => {
+  for(let sample of samples) {
+    const raw_csv = sample.csv.toString();
+    console.log("RAW CSV:\n", raw_csv);
+
+    const parsed = await simple_parse(raw_csv);
+    console.log("PARSED:\n", parsed);
+  }
+});

01-parse-a-csv-file/step3.js

@@ -0,0 +1,27 @@
+import spectrum from "csv-spectrum";
+import csv from "neat-csv";
+import equal from "deep-equal";
+
+const simple_parse = (raw_csv) => {
+  const rows = raw_csv.split("\n");
+  const result = [];
+
+  for(let row of rows) {
+    result.push(row.split(','));
+  }
+
+  return result;
+}
+
+spectrum(async (err, samples) => {
+  for(let sample of samples) {
+    const raw_csv = sample.csv.toString();
+    const good = await csv(raw_csv);
+    const ours = await simple_parse(raw_csv);
+
+    if(!equal(ours, good)) {
+      console.error("EXPECTED", good, "\nGOT", ours);
+      process.exit(1);
+    }
+  }
+});