20 lines
592 B
JavaScript
20 lines
592 B
JavaScript
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import { registerHelper } from '@ember/test';
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const invariant = (truthy, error) => {
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if (!truthy) throw new Error(error);
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};
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export default function registerCodeMirrorHelpers() {
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registerHelper('getCodeMirrorInstance', function(app, selector) {
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const cmService = app.__container__.lookup('service:code-mirror');
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const element = document.querySelector(selector);
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invariant(element, `Selector ${selector} matched no elements`);
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const cm = cmService.instanceFor(element.id);
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invariant(cm, `No registered CodeMirror instance for ${selector}`);
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return cm;
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});
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}
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