Completed first stage of schema inference

Author: ericallam

.eslintignore

@@ -1,2 +1,3 @@
 node_modules
-lib
+lib
+cli

README.md

@@ -23,3 +23,7 @@
 - Provide with multiple JSON documents to improve inference
 
 ## Usage
+
+## Roadmap
+
+- Add "verbose" mode to include `$id`, `examples`, etc.

cli/schema-infer.js

@@ -0,0 +1,26 @@
+#!/usr/bin/env/node
+
+const { readFileSync } = require("fs");
+const yargs = require("yargs");
+const { inferSchema } = require("../lib");
+
+const builder = (command) =>
+  command.positional("file", {
+    describe: "The file to infer the schema from",
+    type: "string",
+  });
+
+const handler = ({ file }) => {
+  // Read the file and parse the json
+  const raw = readFileSync(file, "utf8").toString();
+
+  const document = JSON.parse(raw);
+
+  const inferredSchema = inferSchema(document);
+
+  const schema = inferredSchema.toJSONSchema({ includeSchema: true });
+
+  console.log(JSON.stringify(schema, null, 2));
+};
+
+yargs.command("$0 <file>", "Infer the schema from a json file", builder, handler).parse();