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doc: fix exec example in child_process

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Previously, the example was checking for error by strict equality to
null. The error could be undefined though which would fail that check.

PR-URL: https://github.com/nodejs/node/pull/6660
Reviewed-By: Myles Borins <myles.borins@gmail.com>
Reviewed-By: Jeremy Whitlock <jwhitlock@apache.org>
This commit is contained in:
Evan Lucas 2016-05-09 14:49:03 -05:00
parent a661e26300
commit d13b9d3f7f
1 changed files with 7 additions and 7 deletions
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14
doc/api/child_process.md
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@ -140,13 +140,13 @@ generated output.
```js
const exec = require('child_process').exec;
const child = exec('cat *.js bad_file | wc -l',
(error, stdout, stderr) => {
console.log(`stdout: ${stdout}`);
console.log(`stderr: ${stderr}`);
if (error !== null) {
console.log(`exec error: ${error}`);
}
exec('cat *.js bad_file | wc -l', (error, stdout, stderr) => {
if (error) {
console.error(`exec error: ${error}`);
return;
}
console.log(`stdout: ${stdout}`);
console.log(`stderr: ${stderr}`);
});
```