Cannot call a namespace ('moment')

My library uses moment import * as moment from 'moment'.

When I run gulp compile I hit this error. Error: Cannot call a namespace ('moment') at error (C:\SourceCodeNew\IndConsoleSvcProxy\node_modules\rollup\dist\rollup.js:185:14) at Module.error (C:\SourceCodeNew\IndConsoleSvcProxy\node_modules\rollup\dist\rollup.js:8170:3) at CallExpression.bind (C:\SourceCodeNew\IndConsoleSvcProxy\node_modules\rollup\dist\rollup.js:6324:17) at eachChild.child (C:\SourceCodeNew\IndConsoleSvcProxy\node_modules\rollup\dist\rollup.js:5674:34) at keys.forEach.key (C:\SourceCodeNew\IndConsoleSvcProxy\node_modules\rollup\dist\rollup.js:5685:5) at Array.forEach (native) at ConditionalExpression.eachChild (C:\SourceCodeNew\IndConsoleSvcProxy\node_modules\rollup\dist\rollup.js:5678:13) at ConditionalExpression.bind (C:\SourceCodeNew\IndConsoleSvcProxy\node_modules\rollup\dist\rollup.js:5674:8) at eachChild.child (C:\SourceCodeNew\IndConsoleSvcProxy\node_modules\rollup\dist\rollup.js:5674:34) at keys.forEach.key (C:\SourceCodeNew\IndConsoleSvcProxy\node_modules\rollup\dist\rollup.js:5685:5)

This SO post suggesting change the import to import moment from 'moment' but it doesn’t work for me because I hit another error Module '"C:/SourceCodeNew/IndConsoleSvcProxy/node_modules/moment/moment"' has no default export.

Issue Analytics

State:
Created 6 years ago
Comments:17 (1 by maintainers)

Top GitHub Comments

184reactions

Ismaestrocommented, Jan 8, 2018

My workarround:

import * as moment_ from 'moment';

const moment = moment_;

😃

22reactions

will-wowcommented, Aug 11, 2019

FWIW, I ran into a similar problem, and solved it by adding

"esModuleInterop": true,

to my tsconfig.json. That lets you just import library from "library" from CommonJS libraries, instead of import * as library from 'library', and seems to be a little more forgiving to libraries that otherwise give Typescript trouble

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