George Kalpakas 6ab43d7335 fix(ngcc): correctly detect external files from nested node_modules/ (#36559)
Previously, when we needed to detect whether a file is external to a
package, we only checked whether the relative path to the file from the
package's root started with `..`. This would detect external imports
when the packages were siblings (e.g. peer dependencies or hoisted to
the top of `node_modules/` by the package manager), but would fail to
detect imports from packages located in nested `node_modules/` as
external. For example, importing `node_modules/foo/node_modules/bar`
from a file in `node_modules/foo/` would be considered internal to the
`foo` package.

This could result in processing/analyzing more files than necessary.
More importantly it could lead to errors due to trying to analyze
non-Angular packages that were direct dependencies of Angular packages.

This commit fixes it by also verifying that the relative path to a file
does not start with `node_modules/`.

Jira issue: [FW-2068](https://angular-team.atlassian.net/browse/FW-2068)

Fixes #36526

PR Close #36559
2020-04-10 09:10:26 -07:00
2020-01-27 09:31:22 -08:00
2020-01-13 07:21:43 -08:00

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