no-identical-title crashes if title is missing

/* eslint ava/no-identical-title: "error" */
const test = require('ava');
test(t => t.pass());

Running eslint on that results in:

TypeError: Cannot read property 'type' of undefined
Occurred while linting hello.ava.js:3
    at isStatic (node_modules/eslint-plugin-ava/rules/no-identical-title.js:12:31)
    at node_modules/eslint-plugin-ava/rules/no-identical-title.js:35:9
    at node_modules/enhance-visitors/index.js:25:12
    at node_modules/enhance-visitors/index.js:15:7
    at node_modules/eslint/lib/linter/safe-emitter.js:45:58
    at Array.forEach (<anonymous>)

[novemberborn]

Yea that shouldn't crash. Nice find.

[sindresorhus]

If anyone wants to work on this, see the feedback given in #318.

[novemberborn]

It also misidentifies syntax like test.meta.file.startsWith() as a test declaration.

[fregante]

Same exact error when using t.true() (without a parameter), on the file:

https://github.com/fregante/chrome-webstore-upload-cli/blob/ab45edaf6b1681c9ce50caf65acfa89ed6f66714/test/cli.js#L27

TypeError: Cannot read property 'type' of undefined
Occurred while linting ./test/cli.js:22
    at booleanHandler (./node_modules/eslint-plugin-ava/rules/prefer-t-regex.js:94:35)
    at ./node_modules/eslint-plugin-ava/rules/prefer-t-regex.js:192:5
    at ./node_modules/enhance-visitors/index.js:25:12
    at ./node_modules/enhance-visitors/index.js:15:7
    at ./node_modules/eslint/lib/linter/safe-emitter.js:45:58
    at Array.forEach (<anonymous>)
    at Object.emit (./node_modules/eslint/lib/linter/safe-emitter.js:45:38)
    at NodeEventGenerator.applySelector (./node_modules/eslint/lib/linter/node-event-generator.js:293:26)
    at NodeEventGenerator.applySelectors (./node_modules/eslint/lib/linter/node-event-generator.js:322:22)
    at NodeEventGenerator.enterNode (./node_modules/eslint/lib/linter/node-event-generator.js:336:14)

I had seen this error before but it wasn't clear what the issue was since the line does not match the error (and there's no "type" in the user code)