handsontable/hyperformula

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HyperFormula is an open-source headless spreadsheet for business web apps. It comes with over 400 formulas, CRUD operations, undo-redo, clipboard support, and sorting.

Stars: 2.8k
Forks: 171
Open beginner issues: 0
Indexed issues: 131
Avg merge: 1d 22h
Merged PRs (30d): 7

Dominant language: TypeScript
License: No license data
Last GitHub push: Aug 10, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: good first issue

Beginner friendly Everything

Open All

131 open issues indexed

Add support for INDIRECT Open

Feature Function

Difficulty 4/5 3-5 days Newbie friendliness 35/100

handsontable/hyperformula#1260 · 4 comments · 1 reaction · Opened May 4, 2023
`updateConfig()` clears undo-redo stack Open

Bug Impact: Low Performance

Difficulty 4/5 3-5 days Newbie friendliness 35/100

handsontable/hyperformula#1252 · Opened Apr 25, 2023
FORMULATEXT failing when the argument is not a CellReference type Open

Bug Function Impact: Low

Difficulty 4/5 3-5 days Newbie friendliness 35/100

handsontable/hyperformula#1213 · 1 comment · Opened Mar 29, 2023
Wrong result when using `ROW()` function inside a named expression Open

Bug Impact: Medium Named Expressions

Difficulty 3/5 1-2 days Newbie friendliness 45/100

handsontable/hyperformula#1208 · 1 comment · Opened Mar 25, 2023
Error when trying to move columns when `maxColumns` limit is set tightly Open

Bug Impact: Medium

handsontable/hyperformula#1185 · 1 assignee · Opened Mar 9, 2023
Docs: Exclude file `api-ref-readme.html` from search results (previously: `api-template.html`) Open

Bug Docs Impact: Medium

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

handsontable/hyperformula#1180 · 1 comment · Opened Mar 7, 2023
Calling `setRowsOrder` twice crashes the application Open

Feature Impact: Medium

handsontable/hyperformula#1179 · 2 comments · 1 assignee · Opened Mar 7, 2023
[Refactor] Visitor design pattern for algorithms that traverse the AST tree Open

Impact: Medium Tech Debt

handsontable/hyperformula#1169 · 1 assignee · Opened Mar 1, 2023
Docs: Cannot scroll through the autocomplete list of searches with multiple results Open

Bug Docs Impact: Low

handsontable/hyperformula#1167 · 1 assignee · Opened Mar 1, 2023
Ability to know which formulas changed after a CRUD operation (before: `formulasUpdated` hook) Open

Feature Impact: Medium

Difficulty 5/5 Over a week Newbie friendliness 35/100

handsontable/hyperformula#1156 · 6 comments · Opened Feb 6, 2023
Allow string addresses in API methods `getCellValue`, `setCellValue` etc Open

Feature Good First Issue Impact: Medium

handsontable/hyperformula#1150 · 1 reaction · 1 assignee · Opened Jan 24, 2023
Define the importable files through `exports` property in `package.json` Open

Breaking Change Feature Impact: Low

handsontable/hyperformula#1144 · 1 assignee · Opened Jan 13, 2023
Licence key expiration warning Open

Bug Impact: Medium

handsontable/hyperformula#1136 · 1 comment · 1 assignee · Opened Jan 10, 2023
Documentation doesn't say what formats are supported by the TEXT() function. Open

Bug Docs Impact: Medium

handsontable/hyperformula#1134 · 1 assignee · Opened Jan 5, 2023
Make `simpleCellRangeToString` work with column ranges and row ranges (before: Convert or Parse strings "A1:B2", "A:A", and "1:2" to Range objects) Open

Feature Impact: Medium

Difficulty 3/5 1-2 days Newbie friendliness 35/100

handsontable/hyperformula#1131 · 5 comments · 3 reactions · Opened Dec 30, 2022
Detailed error messages for parsing errors (better developer experience) Open

Feature Impact: Medium Tech Debt

Difficulty 4/5 3-5 days Newbie friendliness 35/100

handsontable/hyperformula#1115 · 1 reaction · Opened Dec 1, 2022
Add example for importing CSV file Open

Docs Impact: Low

handsontable/hyperformula#1104 · 1 reaction · 1 assignee · Opened Nov 17, 2022
API reference should contain only the public API Open

Docs Impact: Medium

Difficulty 5/5 Over a week Newbie friendliness 25/100

handsontable/hyperformula#1086 · 3 comments · Opened Oct 27, 2022
Date to number coercion gives different results than Microsoft Excel Open

Bug Docs Impact: Low

handsontable/hyperformula#1055 · 1 assignee · Opened Sep 5, 2022
addColumns throws an error with AlwaysDense address mapping with empty values Open

Bug Impact: Medium

handsontable/hyperformula#1027 · 1 comment · 1 assignee · Opened Jul 8, 2022
Docs: Describe how to limit the scope of available functions Open

Docs Impact: Medium

handsontable/hyperformula#1023 · 1 assignee · Opened Jul 5, 2022
Docs: Improve the categories of the guides Open

Docs Impact: Medium

Difficulty 4/5 3-5 days Newbie friendliness 35/100

handsontable/hyperformula#991 · Opened May 12, 2022
Run unit tests on different browsers automatically Open

Chore Impact: Medium Tests

Difficulty 5/5 Over a week Newbie friendliness 25/100

handsontable/hyperformula#975 · 1 comment · Opened Apr 15, 2022
Separate unit tests from e2e tests Open

Impact: Medium Tech Debt Tests

handsontable/hyperformula#954 · 1 assignee · Opened Mar 31, 2022
Only execute formulas with none empty cells Open

Feature

Difficulty 4/5 3-5 days Newbie friendliness 35/100

handsontable/hyperformula#950 · 3 comments · Opened Mar 29, 2022
Upgrade Typescript to v5 Open

Feature Impact: Medium Tech Debt

Difficulty 3/5 1-2 days Newbie friendliness 30/100

handsontable/hyperformula#945 · Opened Mar 23, 2022
Improve pages specifications-and-limits and known-limitations Open

Docs Impact: Medium

handsontable/hyperformula#943 · 2 comments · 1 assignee · Opened Mar 21, 2022
Pass back ExportedCellChange in sheetRenamed Listener Open

API Feature

Difficulty 4/5 3-5 days Newbie friendliness 35/100

handsontable/hyperformula#937 · 3 comments · Opened Mar 15, 2022
The documentation for the built-in functions is not detailed enough Open

Docs Impact: High

handsontable/hyperformula#936 · 1 assignee · Opened Mar 15, 2022
getAllCellDependents / getAllCellPrecedents Open

Feature Impact: Medium

handsontable/hyperformula#931 · 1 assignee · Opened Mar 9, 2022
Memory leaks in unit tests Open

Bug Impact: Low Performance Tech Debt

handsontable/hyperformula#927 · 1 comment · 1 assignee · Opened Mar 8, 2022
Proper localization (date formats, currencies etc) Open

Feature Translation

handsontable/hyperformula#912 · 2 comments · 1 assignee · Opened Feb 22, 2022
Support dynamic parameters for OFFSET function Open

Feature Function Impact: Medium

Difficulty 5/5 Over a week Newbie friendliness 25/100

handsontable/hyperformula#910 · 2 comments · Opened Feb 22, 2022
Create an example of using HF inside a WebWorker Open

Docs Impact: Medium

handsontable/hyperformula#907 · 1 reaction · 1 assignee · Opened Feb 17, 2022
Defining ranges by more than 2 cells. Open

Feature

Difficulty 3/5 1-2 days Newbie friendliness 38/100

handsontable/hyperformula#906 · Opened Feb 17, 2022
Sequence detection (e.g. for dragging the fill-handle in UI apps) Open

Feature

Difficulty 5/5 Over a week Newbie friendliness 30/100

handsontable/hyperformula#903 · 1 reaction · Opened Feb 10, 2022
Document the way Hyperformula can be used to implement dragging the fill handle. Open

Docs Impact: Medium

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

handsontable/hyperformula#902 · 1 reaction · Opened Feb 10, 2022
Document how to optimize formulas Open

Docs Impact: Low Performance

Difficulty 3/5 1-2 days Newbie friendliness 28/100

handsontable/hyperformula#899 · 1 comment · Opened Feb 9, 2022
Add support for inferring return types of a custom function Open

Feature Impact: Medium

Difficulty 5/5 Over a week Newbie friendliness 25/100

handsontable/hyperformula#897 · 1 comment · Opened Feb 9, 2022
Inline arrays don't watch their dependencies (previously: Volatile formulas not recalculating array dependencies) Open

Feature Impact: Medium

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

handsontable/hyperformula#894 · 4 comments · Opened Feb 6, 2022
Docs: Present how to make a custom function that includes asynchronous lookup Open

Docs Impact: Medium

handsontable/hyperformula#892 · 1 comment · 2 reactions · 1 assignee · Opened Feb 4, 2022
Ability to move/modify cells for array values. Open

Bug Impact: High

handsontable/hyperformula#888 · 4 comments · 1 assignee · Opened Jan 21, 2022
Docs: Investigate duplicate search results Open

Bug Docs Impact: Medium

handsontable/hyperformula#878 · 1 comment · 1 assignee · Opened Dec 20, 2021
Should formulas support arg percentages with quotes? Open

Feature Impact: Medium

Difficulty 3/5 1-2 days Newbie friendliness 35/100

handsontable/hyperformula#874 · 2 comments · Opened Dec 14, 2021
All cellError instances should have a message Open

Feature Impact: Low

Difficulty 3/5 1-2 days Newbie friendliness 35/100

handsontable/hyperformula#873 · 1 comment · Opened Dec 13, 2021
35 seconds to build graph for non-trivial workbook Open

Bug Impact: Medium Performance Verified

Difficulty 4/5 3-5 days Newbie friendliness 35/100

handsontable/hyperformula#872 · 6 comments · Opened Dec 9, 2021
Provide bundle size information in the documentation Open

Docs Impact: Low

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

handsontable/hyperformula#866 · 1 comment · 2 reactions · Opened Dec 1, 2021
Lots of FunctionPlugin's functions needs documenting Open

Docs Impact: Medium

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

handsontable/hyperformula#864 · 1 comment · Opened Nov 29, 2021
[Research/Spike]: Ability to parse formulas for highlighting Open

Feature Impact: Medium

Difficulty 5/5 Over a week Newbie friendliness 25/100

handsontable/hyperformula#854 · 13 comments · 2 reactions · Opened Oct 31, 2021
Use user defined functions compiled to WASM async module Open

Blocked Feature Verified

Difficulty 5/5 Over a week Newbie friendliness 20/100

handsontable/hyperformula#798 · 3 comments · Opened Aug 12, 2021

handsontable/hyperformula

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