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Webpack loader API: Imperatively transpile code


NPM vs. Bower vs. Browserify vs. Gulp vs. Grunt vs. WebpackImporting Vue Components with WebpackWebpack - ignore loaders in require()?ES6 import using at ('@') sign in path in a vue.js project using WebpackHow do Webpack '!' imports work?Webpack loader order misbehavedHow use vue-loader without vue-cliWebpack babel transpile to es5 doesn't quite workGetting empty object on importing from transpiled ES6 codeWebpack stopped transpiling React






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1















I am writing a Webpack loader that transpiles .vue files to React components:



https://github.com/LukasBombach/single-file-components



A .vue file can consist of a <template> <script> and <style> tag. As part of my implementation I want to imperatively load the <script> part and have it transpiled by Webpack for further processing. So if I have this .vue file:



<template>
<div>hello world</div>
</template>

<script>
import something from "something";

export default
data()
return
baz: "baz"
;

;
</script>


I basically want to do this (dummy code for the purpose of explanation):



myLoader.js



function myLoader(source) 
// should return everything between <script> and </script> as a string
const scriptCode = getCodeInsideScriptTags(source);

// transpiledJsCode should be es5 code that has been transpiled by Webpack
const transpiledJsCode = this.theWebpackFunctionIAmLookingFor(scriptCode);

// Now I can process the transpiledJsCode



Is there a way to do this? I found [this.loadModule][1] and this.callback but if I do this:



const request = `$this.loader.resourcePath.js`;
this.loadModule(request);


it does try and walk through js loader but all it says it that it cannot find the .js file I am looking for. And If I do this:



const scriptCode = getCodeInsideScriptTags(source); 
this.loader.resourcePath += ".js";
this.loader.callback(null, scriptCode);


it does not actually transpile the script code but instead just returns it.



I am assuming the second thing I am doing is a good lead but maybe I am missing something.










share|improve this question




























    1















    I am writing a Webpack loader that transpiles .vue files to React components:



    https://github.com/LukasBombach/single-file-components



    A .vue file can consist of a <template> <script> and <style> tag. As part of my implementation I want to imperatively load the <script> part and have it transpiled by Webpack for further processing. So if I have this .vue file:



    <template>
    <div>hello world</div>
    </template>

    <script>
    import something from "something";

    export default
    data()
    return
    baz: "baz"
    ;

    ;
    </script>


    I basically want to do this (dummy code for the purpose of explanation):



    myLoader.js



    function myLoader(source) 
    // should return everything between <script> and </script> as a string
    const scriptCode = getCodeInsideScriptTags(source);

    // transpiledJsCode should be es5 code that has been transpiled by Webpack
    const transpiledJsCode = this.theWebpackFunctionIAmLookingFor(scriptCode);

    // Now I can process the transpiledJsCode



    Is there a way to do this? I found [this.loadModule][1] and this.callback but if I do this:



    const request = `$this.loader.resourcePath.js`;
    this.loadModule(request);


    it does try and walk through js loader but all it says it that it cannot find the .js file I am looking for. And If I do this:



    const scriptCode = getCodeInsideScriptTags(source); 
    this.loader.resourcePath += ".js";
    this.loader.callback(null, scriptCode);


    it does not actually transpile the script code but instead just returns it.



    I am assuming the second thing I am doing is a good lead but maybe I am missing something.










    share|improve this question
























      1












      1








      1








      I am writing a Webpack loader that transpiles .vue files to React components:



      https://github.com/LukasBombach/single-file-components



      A .vue file can consist of a <template> <script> and <style> tag. As part of my implementation I want to imperatively load the <script> part and have it transpiled by Webpack for further processing. So if I have this .vue file:



      <template>
      <div>hello world</div>
      </template>

      <script>
      import something from "something";

      export default
      data()
      return
      baz: "baz"
      ;

      ;
      </script>


      I basically want to do this (dummy code for the purpose of explanation):



      myLoader.js



      function myLoader(source) 
      // should return everything between <script> and </script> as a string
      const scriptCode = getCodeInsideScriptTags(source);

      // transpiledJsCode should be es5 code that has been transpiled by Webpack
      const transpiledJsCode = this.theWebpackFunctionIAmLookingFor(scriptCode);

      // Now I can process the transpiledJsCode



      Is there a way to do this? I found [this.loadModule][1] and this.callback but if I do this:



      const request = `$this.loader.resourcePath.js`;
      this.loadModule(request);


      it does try and walk through js loader but all it says it that it cannot find the .js file I am looking for. And If I do this:



      const scriptCode = getCodeInsideScriptTags(source); 
      this.loader.resourcePath += ".js";
      this.loader.callback(null, scriptCode);


      it does not actually transpile the script code but instead just returns it.



      I am assuming the second thing I am doing is a good lead but maybe I am missing something.










      share|improve this question














      I am writing a Webpack loader that transpiles .vue files to React components:



      https://github.com/LukasBombach/single-file-components



      A .vue file can consist of a <template> <script> and <style> tag. As part of my implementation I want to imperatively load the <script> part and have it transpiled by Webpack for further processing. So if I have this .vue file:



      <template>
      <div>hello world</div>
      </template>

      <script>
      import something from "something";

      export default
      data()
      return
      baz: "baz"
      ;

      ;
      </script>


      I basically want to do this (dummy code for the purpose of explanation):



      myLoader.js



      function myLoader(source) 
      // should return everything between <script> and </script> as a string
      const scriptCode = getCodeInsideScriptTags(source);

      // transpiledJsCode should be es5 code that has been transpiled by Webpack
      const transpiledJsCode = this.theWebpackFunctionIAmLookingFor(scriptCode);

      // Now I can process the transpiledJsCode



      Is there a way to do this? I found [this.loadModule][1] and this.callback but if I do this:



      const request = `$this.loader.resourcePath.js`;
      this.loadModule(request);


      it does try and walk through js loader but all it says it that it cannot find the .js file I am looking for. And If I do this:



      const scriptCode = getCodeInsideScriptTags(source); 
      this.loader.resourcePath += ".js";
      this.loader.callback(null, scriptCode);


      it does not actually transpile the script code but instead just returns it.



      I am assuming the second thing I am doing is a good lead but maybe I am missing something.







      javascript webpack webpack-loader






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Mar 25 at 12:04









      LukasLukas

      2,8334 gold badges34 silver badges59 bronze badges




      2,8334 gold badges34 silver badges59 bronze badges






















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