Fails on simple liquid-if block

[jacobq]

Input:

{{#liquid-if (gt rows.length 0)}}{{/liquid-if}}

Error:

Transformation error (Transformation angle-brackets-syntax.js errored on file app/templates/components/some-component.hbs. Reason TypeError: Cannot read property 'startsWith' of undefined.
Please report this in https://github.com/rajasegar/ember-angle-brackets-codemod/issues 
Stack trace: TypeError: Cannot read property 'startsWith' of undefined
     at startsWith (/home/user/.npm/_npx/13031/lib/node_modules/ember-angle-brackets-codemod/transforms/angle-brackets/transforms/angle-brackets-syntax.js:155:69)
     at Array.filter (<anonymous>)
     at filter (/home/user/.npm/_npx/13031/lib/node_modules/ember-angle-brackets-codemod/transforms/angle-brackets/transforms/angle-brackets-syntax.js:155:38)
     at tranformValuelessDataParams (/home/user/.npm/_npx/13031/lib/node_modules/ember-angle-brackets-codemod/transforms/angle-brackets/transforms/angle-brackets-syntax.js:193:44)
     at visitNode (../../../../../packages/@glimmer/syntax/lib/traversal/traverse.ts:97:14)
     at visitArray (../../../../../packages/@glimmer/syntax/lib/traversal/traverse.ts:187:18)
     at visitKey (../../../../../packages/@glimmer/syntax/lib/traversal/traverse.ts:168:5)
     at visitNode (../../../../../packages/@glimmer/syntax/lib/traversal/traverse.ts:117:7)
     at Object.traverse (../../../../../packages/@glimmer/syntax/lib/traversal/traverse.ts:231:3)
     at traverse (/home/user/.npm/_npx/13031/lib/node_modules/ember-angle-brackets-codemod/transforms/angle-brackets/transforms/angle-brackets-syntax.js:161:11)
Source: {{#liquid-if (gt rows.length 0)}}{{/liquid-if}} )

Also, if the condition/argument is changed then it doesn't throw this error yet produces incorrect output (interprets helper name as component name):

Input 2:

{{#liquid-if foo}}{{/liquid-if}}

Output:

<LiquidIf />

This appears to be related to #12

[GavinJoyce]

https://github.com/rajasegar/ember-angle-brackets-codemod/pull/28 should help.

We should probably consider expanding the list of built in known helpers though

[tylerturdenpants]

See issue #29