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fix(compiler-cli): ensure file_system handles mixed Windows drives (#38030)

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The `fs.relative()` method assumed that the file-system is a single tree,
which is not the case in Windows, where you can have multiple drives,
e.g. `C:`, `D:` etc.

This commit changes `fs.relative()` so that it no longer forces the result
to be a `PathSegment` and then flows that refactoring through the rest of
the compiler-cli (and ngcc).  The main difference is that now, in some cases,
we needed to check whether the result is "rooted", i.e an `AbsoluteFsPath`,
rather than a `PathSegment`, before using it.

Fixes #36777

PR Close #38030
This commit is contained in:
Pete Bacon Darwin
2020-07-07 15:40:14 +01:00
committed by Andrew Kushnir
parent 13d176302b
commit dba402344f
22 changed files with 99 additions and 75 deletions
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5
packages/compiler-cli/test/ngtsc/env.ts
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@ -12,7 +12,7 @@ import * as ts from 'typescript';
import {createCompilerHost, createProgram} from '../../index';
import {main, mainDiagnosticsForTest, readNgcCommandLineAndConfiguration} from '../../src/main';
import {absoluteFrom, AbsoluteFsPath, FileSystem, getFileSystem, NgtscCompilerHost} from '../../src/ngtsc/file_system';
import {absoluteFrom, AbsoluteFsPath, FileSystem, getFileSystem, NgtscCompilerHost, relativeFrom} from '../../src/ngtsc/file_system';
import {Folder, MockFileSystem} from '../../src/ngtsc/file_system/testing';
import {IndexedComponent} from '../../src/ngtsc/indexer';
import {NgtscProgram} from '../../src/ngtsc/program';
@ -274,7 +274,8 @@ const ROOT_PREFIX = 'root/';
class FileNameToModuleNameHost extends AugmentedCompilerHost {
fileNameToModuleName(importedFilePath: string): string {
const relativeFilePath = this.fs.relative(this.fs.pwd(), this.fs.resolve(importedFilePath));
const relativeFilePath =
relativeFrom(this.fs.relative(this.fs.pwd(), this.fs.resolve(importedFilePath)));
const rootedPath = this.fs.join('root', relativeFilePath);
return rootedPath.replace(/(\.d)?.ts$/, '');
}