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#!/bin/bash
# Executed within a fresh Docker container to test execution of Yarn.
# Should be executed after Yarn has been installed.
set -ex
fail_with_log() {
# Include the yarn-error.log file in the output, if available
exitcode=$?
if [ -s yarn-error.log ]; then
cat yarn-error.log
fi;
exit $exitcode
}
cd /tmp
mkdir yarntest
cd yarntest
echo {} > package.json
# Create the cache directory and remove it
# This simulates issue reported here: https://github.com/yarnpkg/yarn/issues/1724
yarn --version || fail_with_log
rm -rf ~/.cache/yarn
yarn add react || fail_with_log
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