ftl2js throws null error when message has only attributes

[tustin2121]

🐛 Bug Report

The ftl2js function throws a TypeError for trying to "read properties of null" when a message has attributes but no pattern.

To Reproduce

let ftl = `
app = 
  .name = Hello
`;

let data = ftl2js(ftl);

The problem seems to be that the getTypeName function simply assumes that it will be passed a valid object and does no checks for null, and a message with no pattern parses to a null value. Having a message with no pattern but one or more attributes is valid fluent syntax.

Expected behavior

An exception is not thrown.

Your Environment

• runtime version: Electron v30.0.1, Node v20.11.1
• module version: fluent_conv: 3.3.0
• os: Windows

[adrai]

Would you like to send a Pull Request to address this?