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Create a Handlebars helper that safely escapes HTML in Node.js, register it, test it, and troubleshoot common pitfalls—no raw tags, no triple braces, just clean output.
Handlebars printing raw tags or escaped entities? Diagnose whether {{ }}, {{{ }}}, SafeString helpers, or pre-escaped data is the cause, and fix it without opening an XSS hole.
A Handlebars.js template set needs to render content that may include characters such as & and < as well as a limited set of allowed markup from a data source. The documented behavior is that {{ }} escapes HTML entities by default to prevent XSS, while {{{ }}} bypasses escaping and outputs raw HTML. The design constraint is consistent rendering across
handlebars
nodejs
javascript