Expand alias support

Author: grassick

lib/JsonqlCompiler.js

@@ -643,7 +643,7 @@ class JsonqlCompiler {
     }
     // Validate alias string. Throws if bad
     validateAlias(alias) {
-        if (!alias.match(/^[_a-zA-Z][a-zA-Z_0-9. :]*$/)) {
+        if (!alias.match(/^[_a-zA-Z0-9][a-zA-Z_0-9. :]*$/)) {
             throw new Error(`Invalid alias '${alias}'`);
         }
     }

src/JsonqlCompiler.ts

@@ -742,7 +742,7 @@ export default class JsonqlCompiler {
 
   // Validate alias string. Throws if bad
   validateAlias(alias: any) {
-    if (!alias.match(/^[_a-zA-Z][a-zA-Z_0-9. :]*$/)) {
+    if (!alias.match(/^[_a-zA-Z0-9][a-zA-Z_0-9. :]*$/)) {
       throw new Error(`Invalid alias '${alias}'`)
     }
   }

test/JsonqlCompilerTests.ts

@@ -371,7 +371,7 @@ describe("JsonqlCompiler", async function () {
   })
 
   it("validates aliases", function () {
-    assert.throws(() => compiler.validateAlias("1234"))
+    assert.throws(() => compiler.validateAlias(" 1234"))
     assert.throws(() => compiler.validateAlias("ab;c"))
     return compiler.validateAlias("abc")
   })