npm solc: AssertionError [ERR_ASSERTION]: Invalid callback specified












2














I am trying to compile solidity smart contract using npm solc. I tried to follow different examples.
Link to example: https://medium.com/coinmonks/how-to-compile-a-solidity-smart-contract-using-node-js-51ea7c6bf440



I wrote my code like following:



const path = require('path');
const fs = require('fs');
const solc = require('solc');



const helloPath = path.resolve(__dirname, 'contracts', 'hello.sol');
console.log("First" + helloPath);
const source = fs.readFileSync(helloPath, 'UTF-8');
console.log("Second" + source);
console.log(solc.compile(source, 1));


I am getting following error when running the above code.



AssertionError [ERR_ASSERTION]: Invalid callback specified.
at wrapCallback (C:Usersmouazzamj058solc_examplenode_modulessolcwrapper.js:16:5)
at runWithReadCallback (C:Usersmouazzamj058solc_examplenode_modulessolcwrapper.js:37:42)
at compileStandard (C:Usersmouazzamj058solc_examplenode_modulessolcwrapper.js:78:14)
at Object.compileStandardWrapper (C:Usersmouazzamj058solc_examplenode_modulessolcwrapper.js:85:14)
at Object.<anonymous> (C:Usersmouazzamj058solc_exampleexample.js:4:19)
at Module._compile (module.js:652:30)
at Object.Module._extensions..js (module.js:663:10)
at Module.load (module.js:565:32)
at tryModuleLoad (module.js:505:12)
at Function.Module._load (module.js:497:3)


Please help.










share|improve this question






















  • Are you sure this error is from solc. Can you debug and see where exactly you get the error from?
    – nikos fotiadis
    Nov 17 '18 at 20:28










  • There was a bug I guess. Installing solc@0.4.25 worked.
    – Mouazzam
    Nov 19 '18 at 11:08
















2














I am trying to compile solidity smart contract using npm solc. I tried to follow different examples.
Link to example: https://medium.com/coinmonks/how-to-compile-a-solidity-smart-contract-using-node-js-51ea7c6bf440



I wrote my code like following:



const path = require('path');
const fs = require('fs');
const solc = require('solc');



const helloPath = path.resolve(__dirname, 'contracts', 'hello.sol');
console.log("First" + helloPath);
const source = fs.readFileSync(helloPath, 'UTF-8');
console.log("Second" + source);
console.log(solc.compile(source, 1));


I am getting following error when running the above code.



AssertionError [ERR_ASSERTION]: Invalid callback specified.
at wrapCallback (C:Usersmouazzamj058solc_examplenode_modulessolcwrapper.js:16:5)
at runWithReadCallback (C:Usersmouazzamj058solc_examplenode_modulessolcwrapper.js:37:42)
at compileStandard (C:Usersmouazzamj058solc_examplenode_modulessolcwrapper.js:78:14)
at Object.compileStandardWrapper (C:Usersmouazzamj058solc_examplenode_modulessolcwrapper.js:85:14)
at Object.<anonymous> (C:Usersmouazzamj058solc_exampleexample.js:4:19)
at Module._compile (module.js:652:30)
at Object.Module._extensions..js (module.js:663:10)
at Module.load (module.js:565:32)
at tryModuleLoad (module.js:505:12)
at Function.Module._load (module.js:497:3)


Please help.










share|improve this question






















  • Are you sure this error is from solc. Can you debug and see where exactly you get the error from?
    – nikos fotiadis
    Nov 17 '18 at 20:28










  • There was a bug I guess. Installing solc@0.4.25 worked.
    – Mouazzam
    Nov 19 '18 at 11:08














2












2








2







I am trying to compile solidity smart contract using npm solc. I tried to follow different examples.
Link to example: https://medium.com/coinmonks/how-to-compile-a-solidity-smart-contract-using-node-js-51ea7c6bf440



I wrote my code like following:



const path = require('path');
const fs = require('fs');
const solc = require('solc');



const helloPath = path.resolve(__dirname, 'contracts', 'hello.sol');
console.log("First" + helloPath);
const source = fs.readFileSync(helloPath, 'UTF-8');
console.log("Second" + source);
console.log(solc.compile(source, 1));


I am getting following error when running the above code.



AssertionError [ERR_ASSERTION]: Invalid callback specified.
at wrapCallback (C:Usersmouazzamj058solc_examplenode_modulessolcwrapper.js:16:5)
at runWithReadCallback (C:Usersmouazzamj058solc_examplenode_modulessolcwrapper.js:37:42)
at compileStandard (C:Usersmouazzamj058solc_examplenode_modulessolcwrapper.js:78:14)
at Object.compileStandardWrapper (C:Usersmouazzamj058solc_examplenode_modulessolcwrapper.js:85:14)
at Object.<anonymous> (C:Usersmouazzamj058solc_exampleexample.js:4:19)
at Module._compile (module.js:652:30)
at Object.Module._extensions..js (module.js:663:10)
at Module.load (module.js:565:32)
at tryModuleLoad (module.js:505:12)
at Function.Module._load (module.js:497:3)


Please help.










share|improve this question













I am trying to compile solidity smart contract using npm solc. I tried to follow different examples.
Link to example: https://medium.com/coinmonks/how-to-compile-a-solidity-smart-contract-using-node-js-51ea7c6bf440



I wrote my code like following:



const path = require('path');
const fs = require('fs');
const solc = require('solc');



const helloPath = path.resolve(__dirname, 'contracts', 'hello.sol');
console.log("First" + helloPath);
const source = fs.readFileSync(helloPath, 'UTF-8');
console.log("Second" + source);
console.log(solc.compile(source, 1));


I am getting following error when running the above code.



AssertionError [ERR_ASSERTION]: Invalid callback specified.
at wrapCallback (C:Usersmouazzamj058solc_examplenode_modulessolcwrapper.js:16:5)
at runWithReadCallback (C:Usersmouazzamj058solc_examplenode_modulessolcwrapper.js:37:42)
at compileStandard (C:Usersmouazzamj058solc_examplenode_modulessolcwrapper.js:78:14)
at Object.compileStandardWrapper (C:Usersmouazzamj058solc_examplenode_modulessolcwrapper.js:85:14)
at Object.<anonymous> (C:Usersmouazzamj058solc_exampleexample.js:4:19)
at Module._compile (module.js:652:30)
at Object.Module._extensions..js (module.js:663:10)
at Module.load (module.js:565:32)
at tryModuleLoad (module.js:505:12)
at Function.Module._load (module.js:497:3)


Please help.







node.js npm ethereum solidity






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share|improve this question




share|improve this question










asked Nov 17 '18 at 16:29









Mouazzam

789




789












  • Are you sure this error is from solc. Can you debug and see where exactly you get the error from?
    – nikos fotiadis
    Nov 17 '18 at 20:28










  • There was a bug I guess. Installing solc@0.4.25 worked.
    – Mouazzam
    Nov 19 '18 at 11:08


















  • Are you sure this error is from solc. Can you debug and see where exactly you get the error from?
    – nikos fotiadis
    Nov 17 '18 at 20:28










  • There was a bug I guess. Installing solc@0.4.25 worked.
    – Mouazzam
    Nov 19 '18 at 11:08
















Are you sure this error is from solc. Can you debug and see where exactly you get the error from?
– nikos fotiadis
Nov 17 '18 at 20:28




Are you sure this error is from solc. Can you debug and see where exactly you get the error from?
– nikos fotiadis
Nov 17 '18 at 20:28












There was a bug I guess. Installing solc@0.4.25 worked.
– Mouazzam
Nov 19 '18 at 11:08




There was a bug I guess. Installing solc@0.4.25 worked.
– Mouazzam
Nov 19 '18 at 11:08












1 Answer
1






active

oldest

votes


















8














Which version of solc are you using?



Solc released a breaking version the other day, this error is related to that.



npm uninstall solc
npm install solc@0.4.25





share|improve this answer

















  • 1




    It worked. Thanks!!
    – Mouazzam
    Nov 19 '18 at 11:07











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1 Answer
1






active

oldest

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1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









8














Which version of solc are you using?



Solc released a breaking version the other day, this error is related to that.



npm uninstall solc
npm install solc@0.4.25





share|improve this answer

















  • 1




    It worked. Thanks!!
    – Mouazzam
    Nov 19 '18 at 11:07
















8














Which version of solc are you using?



Solc released a breaking version the other day, this error is related to that.



npm uninstall solc
npm install solc@0.4.25





share|improve this answer

















  • 1




    It worked. Thanks!!
    – Mouazzam
    Nov 19 '18 at 11:07














8












8








8






Which version of solc are you using?



Solc released a breaking version the other day, this error is related to that.



npm uninstall solc
npm install solc@0.4.25





share|improve this answer












Which version of solc are you using?



Solc released a breaking version the other day, this error is related to that.



npm uninstall solc
npm install solc@0.4.25






share|improve this answer












share|improve this answer



share|improve this answer










answered Nov 17 '18 at 17:36









Falko

1285




1285








  • 1




    It worked. Thanks!!
    – Mouazzam
    Nov 19 '18 at 11:07














  • 1




    It worked. Thanks!!
    – Mouazzam
    Nov 19 '18 at 11:07








1




1




It worked. Thanks!!
– Mouazzam
Nov 19 '18 at 11:07




It worked. Thanks!!
– Mouazzam
Nov 19 '18 at 11:07


















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