30 lines
1,023 B
JavaScript
30 lines
1,023 B
JavaScript
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// compares the inventory of package items in the tree
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// that is about to be installed (idealTree) with the inventory
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// of items stored in the package-lock file (virtualTree)
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//
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// Returns empty array if no errors found or an array populated
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// with an entry for each validation error found.
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function validateLockfile (virtualTree, idealTree) {
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const errors = []
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// loops through the inventory of packages resulted by ideal tree,
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// for each package compares the versions with the version stored in the
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// package-lock and adds an error to the list in case of mismatches
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for (const [key, entry] of idealTree.entries()) {
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const lock = virtualTree.get(key)
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if (!lock) {
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errors.push(`Missing: ${entry.name}@${entry.version} from lock file`)
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continue
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}
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if (entry.version !== lock.version) {
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errors.push(`Invalid: lock file's ${lock.name}@${lock.version} does ` +
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`not satisfy ${entry.name}@${entry.version}`)
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}
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}
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return errors
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}
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module.exports = validateLockfile
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