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feat(devkit): update parseTargetString to allow referencing targets on the current project #19109

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24 changes: 24 additions & 0 deletions docs/generated/devkit/parseTargetString.md
Original file line number Diff line number Diff line change
Expand Up @@ -35,3 +35,27 @@ parseTargetString('proj:test:production', graph); // returns { project: "proj",
#### Returns

[`Target`](../../devkit/documents/Target)

▸ **parseTargetString**(`targetString`, `ctx`): [`Target`](../../devkit/documents/Target)

Parses a target string into {project, target, configuration}. Passing a full
[ExecutorContext](../../devkit/documents/ExecutorContext) enables the targetString to reference the current project.

Examples:

```typescript
parseTargetString('test', executorContext); // returns { project: "proj", target: "test" }
parseTargetString('proj:test', executorContext); // returns { project: "proj", target: "test" }
parseTargetString('proj:test:production', executorContext); // returns { project: "proj", target: "test", configuration: "production" }
```

#### Parameters

| Name | Type |
| :------------- | :---------------------------------------------------------- |
| `targetString` | `string` |
| `ctx` | [`ExecutorContext`](../../devkit/documents/ExecutorContext) |

#### Returns

[`Target`](../../devkit/documents/Target)
41 changes: 41 additions & 0 deletions packages/devkit/src/executors/parse-target-string.spec.ts
Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
import { parseTargetString, targetToTargetString } from './parse-target-string';

import * as splitTarget from 'nx/src/utils/split-target';
import { ExecutorContext } from 'nx/src/devkit-exports';

const cases = [
{ input: 'one:two', expected: { project: 'one', target: 'two' } },
Expand All @@ -15,12 +16,52 @@ const cases = [
];

describe('parseTargetString', () => {
const mockContext: ExecutorContext = {
projectName: 'my-project',
cwd: '/virtual',
root: '/virtual',
isVerbose: false,
projectGraph: {
nodes: {
'my-project': {
type: 'lib',
name: 'my-project',
data: { root: '/packages/my-project' },
},
'other-project': {
type: 'lib',
name: 'other-project',
data: { root: '/packages/other-project' },
},
},
dependencies: {},
externalNodes: {},
version: '',
},
};

it.each(cases)('$input -> $expected', ({ input, expected }) => {
jest
.spyOn(splitTarget, 'splitTarget')
.mockReturnValueOnce(Object.values(expected) as [string]);
expect(parseTargetString(input, null)).toEqual(expected);
});

it('should support reading project from ExecutorContext', () => {
expect(parseTargetString('build', mockContext)).toEqual({
project: 'my-project',
target: 'build',
});
expect(parseTargetString('build:production', mockContext)).toEqual({
project: 'my-project',
target: 'build',
configuration: 'production',
});
expect(parseTargetString('other-project:build', mockContext)).toEqual({
project: 'other-project',
target: 'build',
});
});
});

describe('targetToTargetString', () => {
Expand Down
39 changes: 37 additions & 2 deletions packages/devkit/src/executors/parse-target-string.ts
Original file line number Diff line number Diff line change
@@ -1,11 +1,15 @@
import type { Target } from 'nx/src/command-line/run/run';
import type { ProjectGraph } from 'nx/src/config/project-graph';
import type { ExecutorContext } from 'nx/src/devkit-exports';

import { requireNx } from '../../nx';

let { readCachedProjectGraph, splitTarget } = requireNx();
let { readCachedProjectGraph, splitTarget, splitByColons } = requireNx();

// TODO: Remove this in Nx 18 when Nx 16.7.0 is no longer supported
splitTarget = splitTarget ?? require('nx/src/utils/split-target').splitTarget;
splitByColons =
splitByColons ?? ((s: string) => s.split(':') as [string, ...string[]]);

/**
* @deprecated(v17) A project graph should be passed to parseTargetString for best accuracy.
Expand All @@ -26,21 +30,52 @@ export function parseTargetString(
targetString: string,
projectGraph: ProjectGraph
): Target;
/**
* Parses a target string into {project, target, configuration}. Passing a full
* {@link ExecutorContext} enables the targetString to reference the current project.
*
* Examples:
* ```typescript
* parseTargetString("test", executorContext) // returns { project: "proj", target: "test" }
* parseTargetString("proj:test", executorContext) // returns { project: "proj", target: "test" }
* parseTargetString("proj:test:production", executorContext) // returns { project: "proj", target: "test", configuration: "production" }
* ```
*/
export function parseTargetString(
targetString: string,
projectGraph?: ProjectGraph
ctx: ExecutorContext
): Target;
export function parseTargetString(
targetString: string,
projectGraphOrCtx?: ProjectGraph | ExecutorContext
): Target {
let projectGraph =
projectGraphOrCtx && 'projectGraph' in projectGraphOrCtx
? projectGraphOrCtx.projectGraph
: (projectGraphOrCtx as ProjectGraph);

if (!projectGraph) {
try {
projectGraph = readCachedProjectGraph();
} catch (e) {
projectGraph = { nodes: {} } as any;
}
}

const [maybeProject] = splitByColons(targetString);
if (
!projectGraph.nodes[maybeProject] &&
projectGraphOrCtx &&
'projectName' in projectGraphOrCtx
) {
targetString = `${projectGraphOrCtx.projectName}:${targetString}`;
}

const [project, target, configuration] = splitTarget(
targetString,
projectGraph
);

if (!project || !target) {
throw new Error(`Invalid Target String: ${targetString}`);
}
Expand Down
1 change: 1 addition & 0 deletions packages/nx/src/devkit-internals.ts
Original file line number Diff line number Diff line change
Expand Up @@ -13,3 +13,4 @@ export { combineOptionsForExecutor } from './utils/params';
export { sortObjectByKeys } from './utils/object-sort';
export { stripIndent } from './utils/logger';
export { readModulePackageJson } from './utils/package-json';
export { splitByColons } from './utils/split-target';