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package.json
{
"type": "module",
"dependencies": {
"fraction.js": "^5.1.0"
},
"devDependencies": {
"typescript": "^5.6.3"
}
}tsconfig.json
{
"compilerOptions": {
"module": "node16"
}
}test.ts
import Fraction from "fraction.js";
let x = new Fraction(1.88);Compilation error:
$ npx tsc
test.ts:3:13 - error TS2351: This expression is not constructable.
Type 'typeof import(".../node_modules/fraction.js/fraction")' has no construct signatures.
3 let x = new Fraction(1.88);
~~~~~~~~
Found 1 error in test.ts:3
It worked fine in v4, and it works again if "type": "module" is added back to node_modules/fraction.js/package.json.
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