Gulp-typescript needs greater memory when the numbers of projects increase

[ericcaigm]

Expected behavior:
I create 20 projects with the following gulpfile attached below. It need set the "--max-old-space-size=8192". My question is why it needs so much memory?

When i add this code to gulp-typescript compiler.js in the bottom of "inputDone" function.
inputDone() {
...
this.program = undefined; --- the added

this.project.output.finish(result);
}

Then it is ok, it does not need so much memory.
So, do i have method to release the typescript program in the gulpfile?

Actual behavior:

Your gulpfile:
const packages: IotSdkPackage[] = [
{
name: 'common',
project: createProject('src/common/tsconfig.json'),
},
{
name: 'log-serverless',
project: createProject('src/log-serverless/tsconfig.json'),
},
{
name: 'utils',
project: createProject('src/utils/tsconfig.json'),
},
{
name: 'lambda',
project: createProject('src/lambda/tsconfig.json'),
},
// other projects
];

The tasks:
function buildPackage(tsPackage: IotSdkPackage) {
let releaseDir = dist;
return tsPackage.project
.src()
.pipe(tsPackage.project())
.pipe(dest(${releaseDir}/${tsPackage.name}));
}

Include your gulpfile, or only the related task (with ts.createProject).

tsconfig.json

Include your tsconfig, if related to this issue.

The main tsconfig.json


{
  "compilerOptions": {
    "target": "es2017",
    "module": "commonjs",
    "allowJs": true,
    "declaration": true,
    "sourceMap": true,
    "outDir": "./dist",
    "strict": true,
    "noImplicitAny": true,
    "strictPropertyInitialization": false,
    "moduleResolution": "node",
    "baseUrl": "./",
    "paths": {
      "*": ["node_modules/*"]
    } 
    "allowSyntheticDefaultImports": true,
    "esModuleInterop": true,
    "experimentalDecorators": true,
    "emitDecoratorMetadata": true,
    "forceConsistentCasingInFileNames": true
  },
  "include": ["src/**/*", "test/**/*", "test-it/**/*", "tools/**/*"],
  "exclude": ["node_modules", "./node_modules", "./node_modules/*", "./node_modules/@types/node/index.d.ts", "*.js"]
}

The sub tsconfig.json in each project
{
  "extends": "../../tsconfig.json",
  "compilerOptions": {
    "baseUrl": "./"
  },
  "include": ["*.ts", "**/*.ts"]
}

Code

Include your TypeScript code, if necessary.