ITADN

Constructor error (TS2351) in TypeScript when using ESM since v5

#81Closedabouvier 创建于 2024-11-01
A
abouviercommented
### package.json ```json { "type": "module", "dependencies": { "fraction.js": "^5.1.0" }, "devDependencies": { "typescript": "^5.6.3" } } ``` ### tsconfig.json ```json { "compilerOptions": { "module": "node16" } } ``` ### test.ts ```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`.
关闭于 2025-08-16 10 条评论