jrop / pratt-calculator Star 25 Code Issues Pull requests A very simple expression evaluator written using a Pratt Parser nodejs javascript calculator parser pratt-parser expression-parser expression-evaluator expression-tree Updated Jul 5, 2018 JavaScript
gipplab / vmext Star 10 Code Issues Pull requests vmext: A Visualization Tool for Mathematical Expression Trees visualization formulae mathematics syntax-tree expression-tree abstract-syntax-tree Updated Feb 2, 2026 JavaScript
formulae-org / formulae-js Star 9 Code Issues Pull requests Fōrmulæ web application visualization javascript programming-language formulae front-end visual-programming-language frontend repl pretty-print expression webapp expressions expression-engine expression-tree expression-tree-builder formula-editor expression-transformation expression-manipulation Updated Jan 3, 2026 JavaScript
szilu / symbion-expr Star 2 Code Issues Pull requests Javascript expression parser/evaluator/solver library expression expression-parser expression-evaluator expression-tree lexical-analyzer grammar-rules Updated May 14, 2020 JavaScript
smdn / polish-notation-impls Sponsor Star 1 Code Issues Pull requests Discussions 数式の二分木化・記法変換・計算アルゴリズムの実装 javascript python java csharp algorithms cpp visualbasic calculation polish-notation expression-tree c-language rpn-calculator rpn-expression binary-expression-tree Updated Jan 10, 2026 JavaScript