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It is possible to get the progress of a spawned process from nodejs?
The Next CEO of Stack OverflowShow progress on node.js child_process.exec?Show progressbar of python script execution with nodejsGetting the progress output of a child spawned process from nodejsHow to get the value from the GET parameters?Get selected text from a drop-down list (select box) using jQueryHow to decide when to use Node.js?Is there a way to get version from package.json in nodejs code?jQuery Get Selected Option From DropdownSpawn and kill a process in node.jsNodejs forked child process exits immediately with status code 8How to execute code after a spawned, detached, child exits from NodeJSnpm - using stale package dataHow to solve “npm does not support Node.js v11.3.0” warning after upgrading NodeJs 11 from NodeJs 8?
I'm spawning npm install -g create-react-app from a js script. I want to know if it's possible to get the progress of the installation using spawn.
const npmExecutable = /^win/.test(process.platform) ? "npm.cmd" : "npm";
const npm = spawn(npmExecutable, ["install", "-g", "create-react-app"]);
I have read this question about using:
npm.on("message", data =>
console.log(`A message: $data`);
);
but it does not show anything.
There is a related question, about knowing the progress of a python script, but it does not have any answers.
Does someone of you have tried something like that or know any clue about this?
javascript node.js npm npm-install child-process
asked Mar 21 at 18:00
robe007robe007
1,17421539
add a comment |
I'm spawning npm install -g create-react-app from a js script. I want to know if it's possible to get the progress of the installation using spawn.
const npmExecutable = /^win/.test(process.platform) ? "npm.cmd" : "npm";
const npm = spawn(npmExecutable, ["install", "-g", "create-react-app"]);
I have read this question about using:
npm.on("message", data =>
console.log(`A message: $data`);
);
but it does not show anything.
There is a related question, about knowing the progress of a python script, but it does not have any answers.
Does someone of you have tried something like that or know any clue about this?
javascript node.js npm npm-install child-process
asked Mar 21 at 18:00
robe007robe007
1,17421539
2
You probably want to usenpm.stdout.on('data', ...). Thechild_process.on('message', ...)event is for a process with an IPC channel, which is generally a child process created usingchild_process.fork(...).
– Jake Holzinger
Mar 21 at 18:19
Oh thanks. Now I can read the data, but what it shows is the final output from the npm command, and not the progress of the execution of the command indeed, and that is what I really need.
– robe007
Mar 21 at 19:24
You will need to process the output of the program to determine it's progress, there is no built in progress monitor for a process.
– Jake Holzinger
Mar 21 at 19:25
Yes, but ... what you mean by saying: process the output of the program to determine it's progress ?
– robe007
Mar 21 at 19:27
According to thenpm configdocumentation you can listen tostderrto get the progress information. It says thatstderrmust be aTTY, I don't know what that means or how to parse the data, but that is where you will want to look.
– Jake Holzinger
Mar 22 at 0:37
add a comment |
I'm spawning npm install -g create-react-app from a js script. I want to know if it's possible to get the progress of the installation using spawn.
const npmExecutable = /^win/.test(process.platform) ? "npm.cmd" : "npm";
const npm = spawn(npmExecutable, ["install", "-g", "create-react-app"]);
I have read this question about using:
npm.on("message", data =>
console.log(`A message: $data`);
);
but it does not show anything.
There is a related question, about knowing the progress of a python script, but it does not have any answers.
Does someone of you have tried something like that or know any clue about this?
javascript node.js npm npm-install child-process
asked Mar 21 at 18:00
robe007robe007
1,17421539
I'm spawning npm install -g create-react-app from a js script. I want to know if it's possible to get the progress of the installation using spawn.
const npmExecutable = /^win/.test(process.platform) ? "npm.cmd" : "npm";
const npm = spawn(npmExecutable, ["install", "-g", "create-react-app"]);
I have read this question about using:
npm.on("message", data =>
console.log(`A message: $data`);
);
but it does not show anything.
There is a related question, about knowing the progress of a python script, but it does not have any answers.
Does someone of you have tried something like that or know any clue about this?
javascript node.js npm npm-install child-process
javascript node.js npm npm-install child-process
asked Mar 21 at 18:00
robe007robe007
1,17421539
asked Mar 21 at 18:00
robe007robe007
1,17421539
asked Mar 21 at 18:00
robe007robe007
1,17421539
asked Mar 21 at 18:00
robe007robe007
1,17421539
asked Mar 21 at 18:00
robe007robe007
1,17421539
1,17421539
2
You probably want to usenpm.stdout.on('data', ...). Thechild_process.on('message', ...)event is for a process with an IPC channel, which is generally a child process created usingchild_process.fork(...).
– Jake Holzinger
Mar 21 at 18:19
Oh thanks. Now I can read the data, but what it shows is the final output from the npm command, and not the progress of the execution of the command indeed, and that is what I really need.
– robe007
Mar 21 at 19:24
You will need to process the output of the program to determine it's progress, there is no built in progress monitor for a process.
– Jake Holzinger
Mar 21 at 19:25
Yes, but ... what you mean by saying: process the output of the program to determine it's progress ?
– robe007
Mar 21 at 19:27
According to thenpm configdocumentation you can listen tostderrto get the progress information. It says thatstderrmust be aTTY, I don't know what that means or how to parse the data, but that is where you will want to look.
– Jake Holzinger
Mar 22 at 0:37
add a comment |
2
You probably want to usenpm.stdout.on('data', ...). Thechild_process.on('message', ...)event is for a process with an IPC channel, which is generally a child process created usingchild_process.fork(...).
– Jake Holzinger
Mar 21 at 18:19
Oh thanks. Now I can read the data, but what it shows is the final output from the npm command, and not the progress of the execution of the command indeed, and that is what I really need.
– robe007
Mar 21 at 19:24
You will need to process the output of the program to determine it's progress, there is no built in progress monitor for a process.
– Jake Holzinger
Mar 21 at 19:25
Yes, but ... what you mean by saying: process the output of the program to determine it's progress ?
– robe007
Mar 21 at 19:27
According to thenpm configdocumentation you can listen tostderrto get the progress information. It says thatstderrmust be aTTY, I don't know what that means or how to parse the data, but that is where you will want to look.
– Jake Holzinger
Mar 22 at 0:37
2
2
You probably want to use
npm.stdout.on('data', ...). The child_process.on('message', ...) event is for a process with an IPC channel, which is generally a child process created using child_process.fork(...).– Jake Holzinger
Mar 21 at 18:19
You probably want to use
npm.stdout.on('data', ...). The child_process.on('message', ...) event is for a process with an IPC channel, which is generally a child process created using child_process.fork(...).– Jake Holzinger
Mar 21 at 18:19
Oh thanks. Now I can read the data, but what it shows is the final output from the npm command, and not the progress of the execution of the command indeed, and that is what I really need.
– robe007
Mar 21 at 19:24
Oh thanks. Now I can read the data, but what it shows is the final output from the npm command, and not the progress of the execution of the command indeed, and that is what I really need.
– robe007
Mar 21 at 19:24
You will need to process the output of the program to determine it's progress, there is no built in progress monitor for a process.
– Jake Holzinger
Mar 21 at 19:25
You will need to process the output of the program to determine it's progress, there is no built in progress monitor for a process.
– Jake Holzinger
Mar 21 at 19:25
Yes, but ... what you mean by saying: process the output of the program to determine it's progress ?
– robe007
Mar 21 at 19:27
Yes, but ... what you mean by saying: process the output of the program to determine it's progress ?
– robe007
Mar 21 at 19:27
According to the
npm config documentation you can listen to stderr to get the progress information. It says that stderr must be a TTY, I don't know what that means or how to parse the data, but that is where you will want to look.– Jake Holzinger
Mar 22 at 0:37
According to the
npm config documentation you can listen to stderr to get the progress information. It says that stderr must be a TTY, I don't know what that means or how to parse the data, but that is where you will want to look.– Jake Holzinger
Mar 22 at 0:37
add a comment |
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2
You probably want to use
npm.stdout.on('data', ...). Thechild_process.on('message', ...)event is for a process with an IPC channel, which is generally a child process created usingchild_process.fork(...).– Jake Holzinger
Mar 21 at 18:19
Oh thanks. Now I can read the data, but what it shows is the final output from the npm command, and not the progress of the execution of the command indeed, and that is what I really need.
– robe007
Mar 21 at 19:24
You will need to process the output of the program to determine it's progress, there is no built in progress monitor for a process.
– Jake Holzinger
Mar 21 at 19:25
Yes, but ... what you mean by saying: process the output of the program to determine it's progress ?
– robe007
Mar 21 at 19:27
According to the
npm configdocumentation you can listen tostderrto get the progress information. It says thatstderrmust be aTTY, I don't know what that means or how to parse the data, but that is where you will want to look.– Jake Holzinger
Mar 22 at 0:37