Nils Knappmeier
9d5aa363cf
- helpers should always be a function, but in #1639 one seems to be undefined. This was not a problem before 4.6 because helpers weren't wrapped then. Now, we must take care only to wrap helpers (when adding the "lookupProperty" function to the options), if they are really functions.
14 lines
568 B
JavaScript
14 lines
568 B
JavaScript
export function wrapHelper(helper, transformOptionsFn) {
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if (typeof helper !== 'function') {
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// This should not happen, but apparently it does in https://github.com/wycats/handlebars.js/issues/1639
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// We try to make the wrapper least-invasive by not wrapping it, if the helper is not a function.
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return helper;
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}
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let wrapper = function(/* dynamic arguments */) {
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const options = arguments[arguments.length - 1];
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arguments[arguments.length - 1] = transformOptionsFn(options);
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return helper.apply(this, arguments);
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};
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return wrapper;
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}
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