ES6 export all values from object

Question

Say I have a module    my-module js  that has an object which should be its return value   let values     a  1  b  2  c  3        export values  results in SyntaxError  Unexpected token   So I can import them like   import  a  from    my-module               a     1 import   as myModule from    my-module     myModule a     1   The only way I found is by hard coding the exports   export let a   values a export let b   values b export let c   values c    or  export let  a  b  c    values   Which is not dynamic   Is it possible to export all values from an object

User · Answer

try this ugly but workable solution      use CommonJS to export all keys module exports     a  1  b  2  c  3        import by key import   a  b  c   from  commonjs-style-module   console log a  b  c

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export const a   1  export const b   2  export const c   3    This will work w  Babel transforms today and should take advantage of all the benefits of ES2016 modules whenever that feature actually lands in a browser   You can also add export default  a  b  c   which will allow you to import all the values as an object w o the   as  i e  import myModule from  my-module    Sources    https   developer mozilla org en-US docs Web JavaScript Reference Statements export http   www 2ality com 2014 09 es6-modules-final html

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I can t really recommend this solution work-around but it does function  Rather than exporting an object  you use named exports each member  In another file  import the first module s named exports into an object and export that object as default  Also export all the named exports from the first module using export   from    file1    values value js  let a   1  let b   2  let c   3   export  a  b  c     values index js  import   as values from    value    export default values  export   from    value     index js  import values   a  from    values    console log values  a       a  1  b  2  c  3  1

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Why not just do a named export of the object  let values     a  1  b  2  c  3   export   values    or export let values     a  1  b  2  c  3    and then a named import where you need it  import   values   from    my-module   let foo   values a let   a  b  c     values  or import   values as myModule   from    my-module   let foo   myModule a let   a  b  c     myModule   can do default export as well  let values     a  1  b  2  c  3   export default values   or export default   a  1  b  2  c  3    and then consume it  import whateverIcallIt from    my-Module   let foo   whateverIcallIt a let  a  b  c     whateverIcallIt   If you want to export a bunch of individual values  say a bunch of constants  you can  export const a   1 export const b   2        or even export const a   1               b   2               c   3         and then import them individually  import   a  b  c   from    my-module

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Every answer requires changing of the import statements   If you want to be able to use   import  a  from    my-module               a     1 import   as myModule from    my-module     myModule a     1   as in the question  and in your my-module you have everything that you need to export in one object  which can be useful e g  if you want to validate the exported values with Joi or JSON Schema  then your my-module would have to be either   let values     a  1  b  2  c  3   let  a  b  c    values  export  a  b  c     Or   let values     a  1  b  2  c  3   export let  a  b  c    values    Not pretty  but it compiles to what you need   See  Babel example

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Exporting each variable from your variables file  Then importing them with   as  in your other file and exporting the  as a constant from that file will give you a dynamic object with the named exports from the first file being attributes on the object exported from the second   Variables js  export const var1    first   export const var2    second       export const varN    nth     Other js  import   as vars from    Variables    export const Variables   vars    Third js  import   Variables   from    Other    Variables var2      second

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I just had need to do this for a config file   var config         x   CHANGE ME       y   CHANGE ME       z   CHANGE ME     export default config    You can do it like this  import   default as config   from    config    console log config x      CHANGE ME   This is using Typescript mind you

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I suggest the following  let s expect a module js   const values     a  1  b  2  c  3     export   values       you could use default  but I m specific here   and then you can do in an index js   import   values   from  module       directly access the object console log values a      1     object destructuring const   a  b  c     values   console log a      1 console log b      2 console log c      3     selective object destructering with renaming const   a k  c m     values  console log k      1 console log m      3     selective object destructering with renaming and default value const   a x  b y  d z   0     values  console log x      1 console log y      2 console log z      0   More examples of destructering objects  https   developer mozilla org en-US docs Web JavaScript Reference Operators Destructuring assignment Object destructuring

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Does not seem so  Quote from ECMAScript 6 modules  the final syntax      You may be wondering     why do we need named exports if we could simply default-export objects  like CommonJS   The answer is that you can   t enforce a static structure via objects and lose all of the associated advantages  described in the next section

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You can do lots of stupid thing with javascript  I will leave this quote here from YDKJS book     Mentioned page of the book -    https   books google com tr books id iOc6CwAAQBAJ amp pg PT150 amp lpg PT150 amp dq JS engine cannot statically analyze the contents of plain object amp source bl amp ots 7v8fMUgwhx amp sig dP3BpY7mEvpvfyxO koWaXczBWI amp hl en amp sa X amp ved 2ahUKEwi4qseXyrDdAhUS-6QKHZYTAEQQ6AEwAHoECAEQAQ v onepage amp q JS 20engine 20cannot 20statically 20analyze 20the 20contents 20of 20plain 20object amp f false

[module] ES6 export all values from object

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