21 lines
525 B
JavaScript
21 lines
525 B
JavaScript
/**
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* Copyright (c) HashiCorp, Inc.
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* SPDX-License-Identifier: MPL-2.0
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*/
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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 (context, selector) {
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const cmService = context.owner.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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