Change "ResizeSensor" -> "css-element-queries" to match name field in that module's package.json
MODIFY
package.cson
package.cson
@@ -130,7 +130,7 @@ devDependencies:
"cssom": 'danielweck/CSSOM'
#"CSSOM": 'NV/CSSOM'
- "ResizeSensor": 'danielweck/css-element-queries'
+ "css-element-queries": 'danielweck/css-element-queries'
# Below dependencies are only used for building tasks (above are runtime deps):

MODIFY
package.json
package.json
"eventemitter3": "latest",
"es6-collections": "latest",
"cssom": "danielweck/CSSOM",
- "ResizeSensor": "danielweck/css-element-queries"
+ "css-element-queries": "danielweck/css-element-queries"
},
"scripts": {
"cson2json": "node ./readium-cfi-js/node_modules/cson/bin/cson2json package.cson > package.json && node readium-cfi-js/readium-build-tools/optimizePackageJsonScripts.js",

Change "ResizeSensor" -> "css-element-queries" to match name field in that module's package.json