handlebars_dart

Releases

1. ▸▾1.0.025 Aug 20262 sources agree

   First stable release of the pure-Dart Handlebars template engine.

   Added

   • First stable release of the pure-Dart Handlebars template engine.
   • Variable substitution with dot and slash path access, parent context (../), and the this/. current-context reference.
   • HTML escaping by default, with unescaped output via {{{ }}}, {{& }}, and SafeString.
   • Built-in block helpers: if, unless, each, with, including {{else}} and inverse ({{^}}) sections.
   • Iteration data variables @index, @key, @first, @last, @root, and block parameters (as |item index|).
   • Custom helpers with positional and hash arguments, block helpers with fn and inverse callbacks, and subexpressions.
   • Built-in lookup and log helpers.
   • Partials, partial blocks ({{#> }}), and inline partials ({{#*inline}}).
   • Comments ({{! }} and {{!-- --}}), literals, raw blocks ({{{{raw}}}}), whitespace control ({{~ ~}}), and the \{{ escape sequence.
   • Strict mode that throws StrictModeException on undefined variables.

   Changed

   • The ANTLR4-based parser and its generated grammar are now test-only. The published library ships the hand-written parser exclusively and no longer depends on the antlr4 runtime.

   Open source →
2. ▸

• dotpromptpub.devDotprompt for Dart: parse and render .prompt files (YAML frontmatter + Handlebars templates) for Generative AI.