add insert a stream example

examples/insert_json_stream.ts

@@ -0,0 +1,44 @@
+import { createClient } from '@clickhouse/client'
+import Stream from 'stream'
+
+void (async () => {
+  const client = createClient()
+  const tableName = 'insert_json_stream'
+  await client.exec({
+    query: `DROP TABLE IF EXISTS ${tableName}`,
+  })
+  await client.exec({
+    query: `
+      CREATE TABLE ${tableName} (id UInt64)
+      ENGINE MergeTree()
+      ORDER BY (id)
+    `,
+  })
+
+  const stream = new Stream.Readable({
+    objectMode: true,
+    read() {
+      /* stub */
+    },
+  })
+
+  stream.push([{ id: '42' }])
+  setTimeout(function closeStream() {
+    stream.push(null)
+  }, 100)
+
+  await client.insert({
+    table: tableName,
+    values: stream,
+    format: 'JSONEachRow',
+  })
+
+  const rows = await client.query({
+    query: `SELECT * from ${tableName}`,
+    format: 'JSONEachRow',
+  })
+
+  console.log(await rows.json())
+
+  await client.close()
+})()