wait for SRE to be ready

[pkra]

We don't handle SRE's odd asynchronicity for SRE.ready.

Until Speech-Rule-Engine/speech-rule-engine#247 is fixed, we need a timeout/restart hack.

[pkra]

here's one example

let restart = function() {
  if (!sre.engineReady()) {
    setTimeout(restart, 200);
    return;
  }
  main()
};

[pkra]

Thanks to the amazing @zorkow, it seems mode: "sync" is sufficient, cf. Speech-Rule-Engine/speech-rule-engine#247 (comment)

[pkra]

Hm... Seems like mode: "sync" is not sufficient after all.

The following will fail the first test -- but if you switch the order, it's fine (presumably because MathJax takes a longer time).

var tape = require('tape');
const mj = require('mathjax-node').typeset;
const postprocessor = require('../lib/main.js').postprocessor;
const preprocessor = require('../lib/main.js').preprocessor;

tape('Wait for sre.engineReady()', function(t) {
  t.plan(2);

  const input1 = {math: '(', format: "TeX", mmlNode: true};
  preprocessor(input1, function(output){
    console.log(output.math)
    t.ok(output.math.includes('left-parenthesis'), 'Preprocessor enrichment ok');
  });

  const input2 = {math: '(', format: "TeX", mml: true, mmlNode: true};

  mj(input, function(result, input){
    postprocessor({speakText: true}, result, input2, function(result){
      t.equal(result.speakText, 'left-parenthesis', 'Postprocessor ok');
    })
  });
});

[pkra]

Thank you @zorkow for pushing out a fix in SRE v2.2.3-beta.0. I'll prep a proper patch.