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// https://github.com/npm/rfcs/pull/183
const envVal = val => Array.isArray(val) ? val.map(v => envVal(v)).join('\n\n')
: val === null || val === false ? ''
: String(val)
const packageEnvs = (env, vals, prefix) => {
for (const [key, val] of Object.entries(vals)) {
if (val === undefined) {
continue
} else if (val && !Array.isArray(val) && typeof val === 'object') {
packageEnvs(env, val, `${prefix}${key}_`)
} else {
env[`${prefix}${key}`] = envVal(val)
}
}
return env
}
module.exports = (env, pkg) => packageEnvs({ ...env }, {
name: pkg.name,
version: pkg.version,
config: pkg.config,
engines: pkg.engines,
bin: pkg.bin,
}, 'npm_package_')
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