[typescript] Cannot find namespace 'ICAL'

[ebousse]

I have the following small typescript project with this dummy main file:

import icaljs from 'ical.js'

icaljs.parse("")

The following package.json:

{
  "scripts": {
    "build": "tsc"
  },
  "dependencies": {
    "ical.js": "2.2.0"
  },
  "devDependencies": {
    "typescript": "5.8.3"
  }
}

And the following tsconfig.json:

{
    "compilerOptions": {
        "rootDir": "src",
        "target": "es2022",
        "module": "commonjs",
        "sourceMap": true,
        "outDir": "build",
    },
    "exclude": [
        "node_modules"
    ]
}

When I try to build the project with npm run build, I obtain the following compilation error:

node_modules/ical.js/dist/types/period.d.ts:126:17 - error TS2503: Cannot find namespace 'ICAL'.

126     compare(dt: ICAL.Time | ICAL.Period): 0 | 1 | -1;
                    ~~~~

node_modules/ical.js/dist/types/period.d.ts:126:29 - error TS2503: Cannot find namespace 'ICAL'.

126     compare(dt: ICAL.Time | ICAL.Period): 0 | 1 | -1;
                                ~~~~


Found 2 errors in the same file, starting at: node_modules/ical.js/dist/types/period.d.ts:126

In ical.js code, replacing ICAL.Time with simply Time and ICAL.Period with simply Period seems to solve the above compilation problem.

[dilyanpalauzov]

See https://github.com/kewisch/ical.js/pull/898/files.

[dilyanpalauzov]

You need ical.js version 2.2.1 - https://github.com/kewisch/ical.js/releases/tag/v2.2.1 .