[Pkg-javascript-devel] Bug#1003260: leaflet-image: FTBFS with webpack5: Invalid configuration object

[Pirate Praveen]

Control: severity -1 serious

On Wed, 26 Jan 2022 14:15:10 +0100 Jonas Smedegaard <jonas at jones.dk> 
wrote:
 > Thanks, I did indeed not notice the relevancy of the -d option.
 >
 > Unfortunately I cannot tell if your proposed patch is working or not,
 > however - seems webpac5 is broken in experimental currently 
(undeclared
 > dependency on node-import-local - which by the way horribly pulls in 
a
 > pile of unneeded packages including babel - and even then webpack 
throws
 > error - and horribly does not fail but continues with - I assume -
 > broken code). :-(
 >
 > Let's continue this when webpack5 in experimental works.

webpack 5 is in unstable and most of the reported issues are fixed. 
Many of the reverse build dependencies now builds fine with webpack 5 
indicating webpack itself is in a good shape now.

I can reproduce the same error,

webpack -d --config debian/webpack.config.js \
        --output-library leafletImage \
        --output-path /<<PKGBUILDDIR>>/debian/js \
        --output-filename leaflet-image.js -- index.js
[webpack-cli] Invalid configuration object. Webpack has been 
initialized using a configuration object that does n
ot match the API schema.
 - configuration.devtool should match pattern 
"^(inline-|hidden-|eval-)?(nosources-)?(cheap-(module-)?)?source-ma
p$".
   BREAKING CHANGE since webpack 5: The devtool option is more strict.
   Please strictly follow the order of the keywords in the pattern.