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To facilitate using the util.debuglog()
function that will be available when
node v0.12 is released now, this is a copy extracted from the source.
Return util.debuglog
, if it exists, otherwise it will return an internal copy
of the implementation from node v0.11.
section
{String} The section of the program to be debuggedThis is used to create a function which conditionally writes to stderr
based on the existence of a NODE_DEBUG
environment variable. If the
section
name appears in that environment variable, then the returned
function will be similar to console.error()
. If not, then the
returned function is a no-op.
For example:
var debuglog = util.debuglog('foo');
var bar = 123;
debuglog('hello from foo [%d]', bar);
If this program is run with NODE_DEBUG=foo
in the environment, then
it will output something like:
FOO 3245: hello from foo [123]
where 3245
is the process id. If it is not run with that
environment variable set, then it will not print anything.
You may separate multiple NODE_DEBUG
environment variables with a
comma. For example, NODE_DEBUG=fs,net,tls
.
FAQs
backport of util.debuglog from node v0.11
The npm package debuglog receives a total of 3,143,033 weekly downloads. As such, debuglog popularity was classified as popular.
We found that debuglog demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
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