Can't update from 0.22.1 - e.BigInt is not a function

[jpasantos]

Running 0.23.* or 0.24.* I get the following error

## Error Type
Runtime TypeError

## Error Message
e.BigInt is not a function


    node_modules/@js-temporal/polyfill/lib/bigintmath.ts (3:26)

    at <unknown> (src/integrations/calendar/index.ts:4:1)


## Code Frame
  2 |
  3 | import 'dotenv/config';
> 4 | import ical from 'node-ical';
    | ^


Next.js version: 16.1.6 (Turbopack)

Tried fetching my own versions of @js-temporal/polyfill and jsbi but I can't figure out why it's throwing this error

[KristjanESPERANTO]

Hi @jpasantos, thanks for reporting! I just created #442 to address this.

If you need a quick workaround, you can try to override the Temporal polyfill in your package.json:

  "overrides": {
    "@js-temporal/polyfill": "npm:temporal-polyfill@^0.3.0"
  },

This replaces the JSBI-based polyfill with one that uses native BigInt. But the cleaner solution would be to wait for the next release 🙂

[jpasantos]

Thank you for the quick response. Will wait for the next release :)

[KristjanESPERANTO]

@jpasantos New version v0.25.0 is released. Please check it out. Feedback would be welcome! 🙂

[jpasantos]

Hi @KristjanESPERANTO ,

Just tested v0.25 and I still get the same behavior. I cleared the yarn cache and started fresh.

From the yarn list command I found this:

├─ next@16.1.6
├─ node-ical@0.25.0
│  └─ rrule-temporal@^1.4.5
├─ rrule-temporal@1.4.5
│  └─ @js-temporal/polyfill@^0.5.1

I also tried the overrides suggestion and it still didn't work for me.

Cheers

[KristjanESPERANTO]

Hi @jpasantos,

Looking at your dependency tree more closely:

├─ node-ical@0.25.0
│  └─ rrule-temporal@^1.4.5
├─ rrule-temporal@1.4.5          ← This is at the root level!
│  └─ @js-temporal/polyfill@^0.5.1

I don't use yarn, but it seems like you have rrule-temporal installed directly as a dependency in your own project (not just as a transitive dependency of node-ical). This direct installation is pulling in @js-temporal/polyfill, which causes the JSBI issue.

Questions:

1. Do you actually need rrule-temporal directly in your project, or was it accidentally added?
2. If you don't need it directly, try removing it.

If you do need it directly, you can try to solve it by adding the resolution to your own package.json:

"resolutions": {
  "@js-temporal/polyfill": "npm:temporal-polyfill@^0.3.0"
}

Could you check your package.json to confirm whether rrule-temporal is listed there?

[jpasantos]

These are the deps in my package.json file

"dependencies": {
  "@emotion/cache": "11.14.0",
  "@emotion/react": "^11.14.0",
  "@emotion/server": "11.11.0",
  "@emotion/styled": "^11.14.1",
  "@fontsource/inter": "5.2.8",
  "@fontsource/plus-jakarta-sans": "5.2.8",
  "@fontsource/roboto-mono": "5.2.8",
  "@hookform/resolvers": "5.2.2",
  "@libsql/client": "^0.17.0",
  "@mui/material": "^7.3.7",
  "@mui/material-nextjs": "^7.3.7",
  "@mui/system": "7.3.7",
  "@mui/utils": "7.3.7",
  "@mui/x-date-pickers": "8.27.0",
  "@phosphor-icons/react": "2.1.10",
  "@preact/signals-react": "^3.7.0",
  "apexcharts": "5.3.6",
  "convert-excel-to-json": "^1.7.0",
  "csv-parser": "^3.2.0",
  "dayjs": "1.11.19",
  "dotenv": "^17.2.3",
  "drizzle-orm": "^0.45.1",
  "fast-jwt": "^6.1.0",
  "google-auth-library": "^10.5.0",
  "google-spreadsheet": "^5.0.2",
  "html-entities": "^2.6.0",
  "imap-simple": "^5.1.0",
  "lodash": "^4.17.23",
  "mailparser": "^3.9.3",
  "next": "16.1.6",
  "node-ical": "^0.25.0",
  "pdfreader": "^3.0.8",
  "react": "19.2.4",
  "react-apexcharts": "1.9.0",
  "react-dom": "19.2.4",
  "react-hook-form": "7.71.1",
  "styled-components": "^6.3.8",
  "uuid": "^13.0.0",
  "zod": "4.3.6"
},
"devDependencies": {
  "@types/convert-excel-to-json": "^1.7.4",
  "@types/imap-simple": "^4.2.10",
  "@types/lodash": "^4.17.23",
  "@types/mailparser": "^3.4.6",
  "@types/node": "25.2.0",
  "@types/react": "19.2.10",
  "drizzle-kit": "^0.31.8",
  "nodemon": "^3.1.11",
  "ts-node": "^10.9.2",
  "tsx": "^4.21.0",
  "typescript": "5.9.3"
}

[jpasantos]

Also this:

$ yarn why rrule-temporal
yarn why v1.22.22
[1/4] Why do we have the module "rrule-temporal"...?
[2/4] Initialising dependency graph...
[3/4] Finding dependency...
[4/4] Calculating file sizes...
=> Found "rrule-temporal@1.4.5"
info Reasons this module exists
   - "node-ical" depends on it
   - Hoisted from "node-ical#rrule-temporal"
info Disk size without dependencies: "428KB"
info Disk size with unique dependencies: "3.36MB"
info Disk size with transitive dependencies: "3.93MB"
info Number of shared dependencies: 1

[KristjanESPERANTO]

Thanks for checking! 👍

Interesting! So rrule-temporal is coming only from node-ical (Yarn just hoists it to the root level).

The issue may the use of Yarn Classic, which doesn't respect npm's overrides field.

Please try adding this to your package.json:

"resolutions": {
  "@js-temporal/polyfill": "npm:temporal-polyfill@^0.3.0"
}

---

Side question: Why are you still using Yarn Classic? It has been in maintenance mode since January 2020.

[jpasantos]

I never really paid attention to yarn but now I took the time to change to yarn 4. Also used the code you supplied and I managed to get 0.25 working :)

Thanks

"resolutions": {
"@js-temporal/polyfill": "npm:temporal-polyfill@^0.3.0"
}

[KristjanESPERANTO]

Great, I'm glad to hear it! 🥳 Just out of curiosity: Have you tried the combination: New yarn without the resolutions entry? I would be interested to know whether overrides works with modern yarn.