mirror of
https://github.com/idanoo/GoScrobble.git
synced 2024-11-22 16:35:14 +00:00
263 lines
9.2 KiB
Markdown
263 lines
9.2 KiB
Markdown
# tsconfig-paths
|
|
|
|
[![npm version][version-image]][version-url]
|
|
[![travis build][travis-image]][travis-url]
|
|
[![Coverage Status][codecov-image]][codecov-url]
|
|
[![MIT license][license-image]][license-url]
|
|
[![code style: prettier][prettier-image]][prettier-url]
|
|
|
|
Use this to load modules whose location is specified in the `paths` section of `tsconfig.json`. Both loading at run-time and via API are supported.
|
|
|
|
Typescript by default mimics the Node.js runtime resolution strategy of modules. But it also allows the use of [path mapping](https://www.typescriptlang.org/docs/handbook/module-resolution.html) which allows arbitrary module paths (that doesn't start with "/" or ".") to be specified and mapped to physical paths in the filesystem. The typescript compiler can resolve these paths from `tsconfig` so it will compile OK. But if you then try to execute the compiled files with node (or ts-node), it will only look in the `node_modules` folders all the way up to the root of the filesystem and thus will not find the modules specified by `paths` in `tsconfig`.
|
|
|
|
If you require this package's `tsconfig-paths/register` module it will read the `paths` from `tsconfig.json` and convert node's module loading calls into to physical file paths that node can load.
|
|
|
|
## How to install
|
|
|
|
```
|
|
yarn add --dev tsconfig-paths
|
|
```
|
|
|
|
or
|
|
|
|
```
|
|
npm install --save-dev tsconfig-paths
|
|
```
|
|
|
|
## How to use
|
|
|
|
### With node
|
|
|
|
`node -r tsconfig-paths/register main.js`
|
|
|
|
### With ts-node
|
|
|
|
`ts-node -r tsconfig-paths/register main.ts`
|
|
|
|
If `process.env.TS_NODE_PROJECT` is set it will be used to resolved tsconfig.json
|
|
|
|
### With webpack
|
|
|
|
For webpack please use the [tsconfig-paths-webpack-plugin](https://github.com/dividab/tsconfig-paths-webpack-plugin).
|
|
|
|
### With mocha and ts-node
|
|
|
|
As of Mocha >= 4.0.0 the `--compiler` was [deprecated](https://github.com/mochajs/mocha/wiki/compilers-deprecation). Instead `--require` should be used. You also have to specify a glob that includes `.ts` files because mocha looks after files with `.js` extension by default.
|
|
|
|
```bash
|
|
mocha -r ts-node/register -r tsconfig-paths/register "test/**/*.ts"
|
|
```
|
|
|
|
### With other commands
|
|
|
|
As long as the command has something similar to a `--require` option that can load a module before it starts, tsconfig-paths should be able to work with it.
|
|
|
|
### With `ts-node` and VSCode
|
|
|
|
The following is an example configuration for the `.vscode/launch.json`.
|
|
|
|
```js
|
|
{
|
|
"version": "0.2.0",
|
|
"configurations": [
|
|
{
|
|
"name": "Debug Functions",
|
|
"request": "launch",
|
|
"type": "node",
|
|
"runtimeArgs": [
|
|
"-r",
|
|
"${workspaceFolder}/functions/node_modules/ts-node/register",
|
|
"-r",
|
|
"${workspaceFolder}/functions/node_modules/tsconfig-paths/register"
|
|
],
|
|
"args": ["${workspaceFolder}/functions/src/index.ts"],
|
|
"cwd": "${workspaceFolder}",
|
|
"protocol": "inspector",
|
|
"env": {
|
|
"NODE_ENV": "development",
|
|
"TS_NODE_PROJECT": "${workspaceFolder}/functions/tsconfig.json"
|
|
},
|
|
"outFiles": ["${workspaceFolder}/functions/lib/**/*.js"]
|
|
}
|
|
]
|
|
}
|
|
```
|
|
|
|
## Bootstrapping with explicit params
|
|
|
|
If you want more granular control over tsconfig-paths you can bootstrap it. This can be useful if you for instance have compiled with `tsc` to another directory where `tsconfig.json` doesn't exists.
|
|
|
|
```javascript
|
|
const tsConfig = require("./tsconfig.json");
|
|
const tsConfigPaths = require("tsconfig-paths");
|
|
|
|
const baseUrl = "./"; // Either absolute or relative path. If relative it's resolved to current working directory.
|
|
const cleanup = tsConfigPaths.register({
|
|
baseUrl,
|
|
paths: tsConfig.compilerOptions.paths,
|
|
});
|
|
|
|
// When path registration is no longer needed
|
|
cleanup();
|
|
```
|
|
|
|
Then run with:
|
|
|
|
`node -r ./tsconfig-paths-bootstrap.js main.js`
|
|
|
|
## Configuration Options
|
|
|
|
You can set options by passing them before the script path, via programmatic usage or via environment variables.
|
|
|
|
```bash
|
|
ts-node --project customLocation/tsconfig.json -r tsconfig-paths/register "test/**/*.ts"
|
|
```
|
|
|
|
### CLI and Programmatic Options
|
|
|
|
_Environment variable denoted in parentheses._
|
|
|
|
- `-P, --project [path]` Path to TypeScript JSON project file (`TS_NODE_PROJECT`)
|
|
|
|
## Config loading process
|
|
|
|
1. Use explicit params passed to register
|
|
2. Use `process.env.TS_NODE_PROJECT` to resolve tsConfig.json and the specified baseUrl and paths.
|
|
3. Resolves tsconfig.json from current working directory and the specified baseUrl and paths.
|
|
|
|
## Programmatic use
|
|
|
|
The public API consists of these functions:
|
|
|
|
- [register](#register)
|
|
- [loadConfig](#loadConfig)
|
|
- [createMatchPath](#createMatchPath) / [createMatchPathAsync](#createMatchPathAsync)
|
|
- [matchFromAbsolutePaths](#matchFromAbsolutePaths) / [matchFromAbsolutePathsAsync](#matchFromAbsolutePathsAsync)
|
|
|
|
### register
|
|
|
|
```typescript
|
|
export interface ExplicitParams {
|
|
baseUrl: string;
|
|
paths: { [key: string]: Array<string> };
|
|
mainFields?: Array<string>;
|
|
addMatchAll?: boolean;
|
|
}
|
|
|
|
/**
|
|
* Installs a custom module load function that can adhere to paths in tsconfig.
|
|
*/
|
|
export function register(explicitParams: ExplicitParams): () => void;
|
|
```
|
|
|
|
This function will patch the node's module loading so it will look for modules in paths specified by tsconfig.json.
|
|
A function is returned for you to reinstate Node's original module loading.
|
|
|
|
### loadConfig
|
|
|
|
```typescript
|
|
export function loadConfig(cwd: string = process.cwd()): ConfigLoaderResult;
|
|
|
|
export type ConfigLoaderResult =
|
|
| ConfigLoaderSuccessResult
|
|
| ConfigLoaderFailResult;
|
|
|
|
export interface ConfigLoaderSuccessResult {
|
|
resultType: "success";
|
|
absoluteBaseUrl: string;
|
|
paths: { [key: string]: Array<string> };
|
|
}
|
|
|
|
export interface ConfigLoaderFailResult {
|
|
resultType: "failed";
|
|
message: string;
|
|
}
|
|
```
|
|
|
|
This function loads the tsconfig.json. It will start searching from the specified `cwd` directory. Passing the tsconfig.json file directly instead of a directory also works.
|
|
|
|
### createMatchPath
|
|
|
|
```typescript
|
|
/**
|
|
* Function that can match a path
|
|
*/
|
|
export interface MatchPath {
|
|
(
|
|
requestedModule: string,
|
|
readJson?: Filesystem.ReadJsonSync,
|
|
fileExists?: (name: string) => boolean,
|
|
extensions?: ReadonlyArray<string>
|
|
): string | undefined;
|
|
}
|
|
|
|
/**
|
|
* Creates a function that can resolve paths according to tsconfig paths property.
|
|
* @param absoluteBaseUrl Absolute version of baseUrl as specified in tsconfig.
|
|
* @param paths The paths as specified in tsconfig.
|
|
* @param mainFields A list of package.json field names to try when resolving module files.
|
|
* @param addMatchAll Add a match-all "*" rule if none is present
|
|
* @returns a function that can resolve paths.
|
|
*/
|
|
export function createMatchPath(
|
|
absoluteBaseUrl: string,
|
|
paths: { [key: string]: Array<string> },
|
|
mainFields: string[] = ["main"],
|
|
addMatchAll: boolean = true
|
|
): MatchPath {
|
|
```
|
|
|
|
The `createMatchPath` function will create a function that can match paths. It accepts `baseUrl` and `paths` directly as they are specified in tsconfig and will handle resolving paths to absolute form. The created function has the signature specified by the type `MatchPath` above.
|
|
|
|
### matchFromAbsolutePaths
|
|
|
|
```typescript
|
|
/**
|
|
* Finds a path from tsconfig that matches a module load request.
|
|
* @param absolutePathMappings The paths to try as specified in tsconfig but resolved to absolute form.
|
|
* @param requestedModule The required module name.
|
|
* @param readJson Function that can read json from a path (useful for testing).
|
|
* @param fileExists Function that checks for existence of a file at a path (useful for testing).
|
|
* @param extensions File extensions to probe for (useful for testing).
|
|
* @param mainFields A list of package.json field names to try when resolving module files.
|
|
* @returns the found path, or undefined if no path was found.
|
|
*/
|
|
export function matchFromAbsolutePaths(
|
|
absolutePathMappings: ReadonlyArray<MappingEntry.MappingEntry>,
|
|
requestedModule: string,
|
|
readJson: Filesystem.ReadJsonSync = Filesystem.readJsonFromDiskSync,
|
|
fileExists: Filesystem.FileExistsSync = Filesystem.fileExistsSync,
|
|
extensions: Array<string> = Object.keys(require.extensions),
|
|
mainFields: string[] = ["main"]
|
|
): string | undefined {
|
|
```
|
|
|
|
This function is lower level and requires that the paths as already been resolved to absolute form and sorted in correct order into an array.
|
|
|
|
### createMatchPathAsync
|
|
|
|
This is the async version of `createMatchPath`. It has the same signature but with a callback parameter for the result.
|
|
|
|
### matchFromAbsolutePathsAsync
|
|
|
|
This is the async version of `matchFromAbsolutePaths`. It has the same signature but with a callback parameter for the result.
|
|
|
|
## How to publish
|
|
|
|
```
|
|
yarn version --patch
|
|
yarn version --minor
|
|
yarn version --major
|
|
```
|
|
|
|
[version-image]: https://img.shields.io/npm/v/tsconfig-paths.svg?style=flat
|
|
[version-url]: https://www.npmjs.com/package/tsconfig-paths
|
|
[travis-image]: https://travis-ci.com/dividab/tsconfig-paths.svg?branch=master&style=flat
|
|
[travis-url]: https://travis-ci.com/dividab/tsconfig-paths
|
|
[codecov-image]: https://codecov.io/gh/dividab/tsconfig-paths/branch/master/graph/badge.svg
|
|
[codecov-url]: https://codecov.io/gh/dividab/tsconfig-paths
|
|
[license-image]: https://img.shields.io/github/license/dividab/tsconfig-paths.svg?style=flat
|
|
[license-url]: https://opensource.org/licenses/MIT
|
|
[prettier-image]: https://img.shields.io/badge/code_style-prettier-ff69b4.svg
|
|
[prettier-url]: https://github.com/prettier/prettier
|