Hannah Wolfe
c76ded8f0f
fixes #1548 - add a guard to show readable syntax error for if / unless helper - prevents against 3 different errors that can be generated by different systax errors
27 lines
847 B
JavaScript
27 lines
847 B
JavaScript
import { appendContextPath, blockParams, createFrame, isEmpty, isFunction } from '../utils';
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import Exception from '../exception';
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export default function(instance) {
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instance.registerHelper('with', function(context, options) {
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if (arguments.length != 2) { throw new Exception('#with requires exactly one argument');}
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if (isFunction(context)) { context = context.call(this); }
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let fn = options.fn;
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if (!isEmpty(context)) {
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let data = options.data;
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if (options.data && options.ids) {
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data = createFrame(options.data);
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data.contextPath = appendContextPath(options.data.contextPath, options.ids[0]);
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}
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return fn(context, {
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data: data,
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blockParams: blockParams([context], [data && data.contextPath])
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});
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} else {
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return options.inverse(this);
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}
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});
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}
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