throw on invalid type

Author: konsumer

README.md

@@ -29,6 +29,8 @@ CREATE TABLE user (
 const output = await sqldef('mysql', sql1, sql2)
 ```
 
+Supported types: `mysql`, `sqlite3`, `mssql`, `postgres`.
+
 ### development
 
 Normally, you should not need to do this stuff, but for local dev:

build.js

@@ -9,6 +9,9 @@ const buf = new Uint8Array([${[...buf].join(',')}])
 const go = new Go()
 
 export default async (t,s1,s2) => {
+  if (!['mysql', 'sqlite3', 'mssql', 'postgres'].includes(t)) {
+    throw new Error(\`Invalid type: \${t}. Use mysql/sqlite3/mssql/postgres\`)
+  }
   const inst = await WebAssembly.instantiate(buf, go.importObject)
   go.run(inst.instance)
   const sqlDefModule = createSqlDefModule()

index.js

@@ -49,7 +49,7 @@ test('should be able to diff some sqlite', async ({ assert }) => {
     name VARCHAR NOT NULL
   );
   `
-  const r = await sqldef('sqlite', sql1, sql2)
+  const r = await sqldef('sqlite3', sql1, sql2)
   assert.snapshot(r)
 })
 
@@ -78,4 +78,25 @@ test('should throw on bad SQL', async ({assert}) => {
   } catch(e) {
     assert.snapshot(e.message)
   }
+})
+
+test('should throw on bad type', async ({ assert }) => {
+ const sql1 = `
+  CREATE TABLE IF NOT EXISTS user (
+    id INT PRIMARY KEY
+  );
+  `
+
+  const sql2 = `
+  CREATE TABLE IF NOT EXISTS user (
+    id INT PRIMARY KEY,
+    name VARCHAR NOT NULL
+  );
+  `
+  try {
+    await sqldef('sqlite', sql1, sql2)
+    assert.equal(true, 'Should have thrown')
+  } catch(e) {
+    assert.snapshot(e.message)
+  }
 })

sqldef.test.js

@@ -11,9 +11,13 @@ exports[`should be able to diff some postgres 1`] = `
 `;
 
 exports[`should be able to diff some sqlite 1`] = `
-"ALTER TABLE \`user\` CHANGE COLUMN \`id\` \`id\` int NOT NULL;\\nALTER TABLE \`user\` DROP COLUMN \`name\`"
+"ALTER TABLE \`user\` DROP COLUMN \`name\`"
 `;
 
 exports[`should throw on bad SQL 1`] = `
 "found syntax error when parsing DDL \\"BAD STUFF\\": syntax error at position 4 near 'BAD'"
 `;
+
+exports[`should throw on bad type 1`] = `
+"Invalid type: sqlite. Use mysql/sqlite3/mssql/postgres"
+`;