Import hooks into React Typescript











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I am trying to implement hooks into a React (^16.6.0) application using TypeScript



import * as React, {useState}  from 'react';


Any idea what is the right syntax for this import?






reactjs







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    up vote
    -1
    down vote

    favorite












    I am trying to implement hooks into a React (^16.6.0) application using TypeScript



    import * as React, {useState}  from 'react';


    Any idea what is the right syntax for this import?






    reactjs







    share|improve this question
























      up vote
      -1
      down vote

      favorite









      up vote
      -1
      down vote

      favorite











      I am trying to implement hooks into a React (^16.6.0) application using TypeScript



      import * as React, {useState}  from 'react';


      Any idea what is the right syntax for this import?






      reactjs







      share|improve this question













      I am trying to implement hooks into a React (^16.6.0) application using TypeScript



      import * as React, {useState}  from 'react';


      Any idea what is the right syntax for this import?






      reactjs




      reactjs






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 21 at 14:29









      Alexandru Popa

      105




      105
























          1 Answer
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          up vote
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          down vote



          accepted










          import supports a limited set of syntax variations.



          It can be:



          import React, {useState}  from 'react';


          The downside is that entire library is imported, because React is default export and cannot be tree-shaken. Since the presence of React import is needed to use JSX syntax, a more efficient way is:



          import * as React from 'react';
          
import {useState}  from 'react';


          Hooks were introduced in pre-release React 16.7. react version constraint should be ^16.7.0-alpha.0, @types/react should be ^16.7.0.






          share|improve this answer























          • Sorry still not working it gives me the following 'Module '"C:/web-client-ts/node_modules/@types/react/index"' has no exported member 'useState'.'
            – Alexandru Popa
            Nov 21 at 15:15












          • Hooks are 16.7, not 16.6. I updated the answer.
            – estus
            Nov 21 at 15:26













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          1 Answer
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          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes








          up vote
          0
          down vote



          accepted










          import supports a limited set of syntax variations.



          It can be:



          import React, {useState}  from 'react';


          The downside is that entire library is imported, because React is default export and cannot be tree-shaken. Since the presence of React import is needed to use JSX syntax, a more efficient way is:



          import * as React from 'react';
          
import {useState}  from 'react';


          Hooks were introduced in pre-release React 16.7. react version constraint should be ^16.7.0-alpha.0, @types/react should be ^16.7.0.






          share|improve this answer























          • Sorry still not working it gives me the following 'Module '"C:/web-client-ts/node_modules/@types/react/index"' has no exported member 'useState'.'
            – Alexandru Popa
            Nov 21 at 15:15












          • Hooks are 16.7, not 16.6. I updated the answer.
            – estus
            Nov 21 at 15:26

















          up vote
          0
          down vote



          accepted










          import supports a limited set of syntax variations.



          It can be:



          import React, {useState}  from 'react';


          The downside is that entire library is imported, because React is default export and cannot be tree-shaken. Since the presence of React import is needed to use JSX syntax, a more efficient way is:



          import * as React from 'react';
          
import {useState}  from 'react';


          Hooks were introduced in pre-release React 16.7. react version constraint should be ^16.7.0-alpha.0, @types/react should be ^16.7.0.






          share|improve this answer























          • Sorry still not working it gives me the following 'Module '"C:/web-client-ts/node_modules/@types/react/index"' has no exported member 'useState'.'
            – Alexandru Popa
            Nov 21 at 15:15












          • Hooks are 16.7, not 16.6. I updated the answer.
            – estus
            Nov 21 at 15:26















          up vote
          0
          down vote



          accepted







          up vote
          0
          down vote



          accepted






          import supports a limited set of syntax variations.



          It can be:



          import React, {useState}  from 'react';


          The downside is that entire library is imported, because React is default export and cannot be tree-shaken. Since the presence of React import is needed to use JSX syntax, a more efficient way is:



          import * as React from 'react';
          
import {useState}  from 'react';


          Hooks were introduced in pre-release React 16.7. react version constraint should be ^16.7.0-alpha.0, @types/react should be ^16.7.0.






          share|improve this answer














          import supports a limited set of syntax variations.



          It can be:



          import React, {useState}  from 'react';


          The downside is that entire library is imported, because React is default export and cannot be tree-shaken. Since the presence of React import is needed to use JSX syntax, a more efficient way is:



          import * as React from 'react';
          
import {useState}  from 'react';


          Hooks were introduced in pre-release React 16.7. react version constraint should be ^16.7.0-alpha.0, @types/react should be ^16.7.0.







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Nov 21 at 15:25

























          answered Nov 21 at 14:55









          estus

          63.7k2193201




          63.7k2193201












          • Sorry still not working it gives me the following 'Module '"C:/web-client-ts/node_modules/@types/react/index"' has no exported member 'useState'.'
            – Alexandru Popa
            Nov 21 at 15:15












          • Hooks are 16.7, not 16.6. I updated the answer.
            – estus
            Nov 21 at 15:26




















          • Sorry still not working it gives me the following 'Module '"C:/web-client-ts/node_modules/@types/react/index"' has no exported member 'useState'.'
            – Alexandru Popa
            Nov 21 at 15:15












          • Hooks are 16.7, not 16.6. I updated the answer.
            – estus
            Nov 21 at 15:26


















          Sorry still not working it gives me the following 'Module '"C:/web-client-ts/node_modules/@types/react/index"' has no exported member 'useState'.'
          – Alexandru Popa
          Nov 21 at 15:15






          Sorry still not working it gives me the following 'Module '"C:/web-client-ts/node_modules/@types/react/index"' has no exported member 'useState'.'
          – Alexandru Popa
          Nov 21 at 15:15














          Hooks are 16.7, not 16.6. I updated the answer.
          – estus
          Nov 21 at 15:26






          Hooks are 16.7, not 16.6. I updated the answer.
          – estus
          Nov 21 at 15:26




















           

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