Google's Closure Compiler has this flag for logging:
--logging_level VAL
The logging level (standard java.util.logging.Level values)
for Compiler progress. Does not control errors or warnings
for the JavaScript code under compilation.
So I can set the logging level to one of: SEVERE
, WARNING
, INFO
, CONFIG
, FINE
, FINER
, FINEST
.
But how do I enable logging, and where is the log file?
Create a file called logging.properties
with the following contents:
handlers = java.util.logging.FileHandler
java.util.logging.FileHandler.pattern = closure-compiler.log
java.util.logging.FileHandler.formatter = java.util.logging.SimpleFormatter
Then set the java.util.logging.config.file
Java system property to logging.properties
when running the application:
java -Djava.util.logging.config.file=logging.properties \
-jar compiler.jar \
--js script.js \
--logging_level FINEST
The log will be written to closure-compiler.log
.
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