Declaration for interface-only file not generated in watch mode

[ahramadan]

What happens and why it is wrong

Source file with only type declarations ex: Interfaces don't get declarations generated in watch mode.

The plugin is watching watching: project/packages/data-switch/DataSwitch.ts for changes
but not generating new declaration files when the file changes.

The file contains only export interface definitions.

Environment

Linux Env.

Versions

• typescript: 3.5
• rollup: 1.17.0
• rollup-plugin-typescript2: 0.21.2

rollup.config.js

import resolve from 'rollup-plugin-node-resolve';
import ts from 'rollup-plugin-typescript2';
import typescript from 'typescript';
import commonjs from "rollup-plugin-commonjs";
import path from 'path';



/*
Resolve paths under node modules
*/
const extensions = ['.ts', '.js'];
const nodeResolveOptions = {
    extensions
};

/*
Resolve commonjs modules as es6 modules
*/
const commonjsOptions = {
    include: /node_modules/
};

/*
Typescript transpiler options
to debug raise the verbosity to 3
*/
const typescriptOptions = {
    verbosity:3,
    clean:true,
    typescript,
    useTsconfigDeclarationDir:true
};

export default {
    input: 'index.ts',
    onwarn,
    output: [
      {
        file:pkg.main,
        format:"umd",
        name : libraryName,
        exports: "named",
        sourcemap: true,
        interop: true,
        globals: knownGlobals
      },
      {
        file: pkg.module,
        format: 'es',
        exports: "named",
        sourcemap: true,
        interop: true,
        globals: knownGlobals,
        /*paths: {
          handlebars: './handlebars.js'
        }*/
      }
    ],
    external:externals,
  plugins: [
    resolve(nodeResolveOptions),
    commonjs(commonjsOptions),
    ts(typescriptOptions)
    ]
};

tsconfig.json

{
    "extends":"../../tsconfig",
    "include": [
        "./**/*.ts"
    ],
    "compilerOptions": {
        "declarationDir": "./dist"
    }
}

extends

{
    "exclude": [
        "**/node_modules/",
        "**/dist/"
    ],
    "compilerOptions": {
        "lib": ["dom","es6"],
        "noImplicitAny": true,
        "module": "es6",
        "target": "es5",
        "declaration": true,
        "esModuleInterop": true,
        "allowSyntheticDefaultImports":true,
        "sourceMap": true,
        "moduleResolution": "node"
    }
}

plugin output with verbosity 3

rollup v1.17.0
bundles index.ts → dist/index.js, dist/index.es.js...
rpt2: built-in options overrides: {
    "noEmitHelpers": false,
    "importHelpers": true,
    "noResolve": false,
    "noEmit": false,
    "inlineSourceMap": false,
    "outDir": "project/packages/data-switch/.rpt2_cache/placeholder",
    "moduleResolution": 2,
    "allowNonTsExtensions": true
}
rpt2: parsed tsconfig: {
    "options": {
        "lib": [
            "lib.dom.d.ts",
            "lib.es2015.d.ts"
        ],
        "noImplicitAny": true,
        "module": 5,
        "target": 1,
        "declaration": true,
        "esModuleInterop": true,
        "allowSyntheticDefaultImports": true,
        "sourceMap": true,
        "moduleResolution": 2,
        "declarationDir": "project/packages/data-switch/dist",
        "configFilePath": "project/packages/data-switch/tsconfig.json",
        "noEmitHelpers": false,
        "importHelpers": true,
        "noResolve": false,
        "noEmit": false,
        "inlineSourceMap": false,
        "outDir": "project/packages/data-switch/.rpt2_cache/placeholder",
        "allowNonTsExtensions": true
    },
    "fileNames": [
        "project/packages/data-switch/DataSwitch.ts",
        "project/packages/data-switch/DataSwitchComponent.test.ts",
        "project/packages/data-switch/DataSwitchComponent.ts",
        "project/packages/data-switch/PickerValidator.ts",
        "project/packages/data-switch/hbs.d.ts",
        "project/packages/data-switch/index.ts"
    ],
    "typeAcquisition": {
        "enable": false,
        "include": [],
        "exclude": []
    },
    "raw": {
        "extends": "../../tsconfig",
        "include": [
            "./**/*.ts"
        ],
        "compilerOptions": {
            "declarationDir": "./dist"
        },
        "compileOnSave": false,
        "exclude": [
            "../../**/node_modules/",
            "../../**/dist/"
        ]
    },
    "errors": [],
    "wildcardDirectories": {
        "project/packages/data-switch": 1
    },
    "compileOnSave": false,
    "configFileSpecs": {
        "includeSpecs": [
            "./**/*.ts"
        ],
        "excludeSpecs": [
            "../../**/node_modules/",
            "../../**/dist/"
        ],
        "validatedIncludeSpecs": [
            "./**/*.ts"
        ],
        "validatedExcludeSpecs": [
            "../../**/node_modules/",
            "../../**/dist/"
        ],
        "wildcardDirectories": {
            "project/packages/data-switch": 1
        }
    }
}
rpt2: included:
[
    "*.ts+(|x)",
    "**/*.ts+(|x)"
]
rpt2: excluded:
[
    "*.d.ts",
    "**/*.d.ts"
]
rpt2: transpiling 'project/packages/data-switch/index.ts'
rpt2:     watching: project/packages/data-switch/DataSwitch.ts
rpt2:               project/packages/data-switch/DataSwitchComponent.ts
rpt2: generated declarations for 'project/packages/data-switch/index.ts'
rpt2: transpiling 'project/packages/data-switch/DataSwitchComponent.ts'
rpt2:     watching: project/packages/data-switch/DataSwitch.ts
rpt2:               project/packages/core/dist/index.d.ts
rpt2: generated declarations for 'project/packages/data-switch/DataSwitchComponent.ts'
rpt2: generating target 1
rpt2: rolling caches
rpt2: writing declarations for 'project/packages/data-switch/index.ts' to 'project/packages/data-switch/dist/index.d.ts'
rpt2: writing declarations for 'project/packages/data-switch/DataSwitchComponent.ts' to 'project/packages/data-switch/dist/DataSwitchComponent.d.ts'
rpt2: writing declarations for 'project/packages/data-switch/DataSwitch.ts' to 'project/packages/data-switch/dist/DataSwitch.d.ts'
rpt2: writing declarations for 'project/packages/data-switch/DataSwitchComponent.test.ts' to 'project/packages/data-switch/dist/DataSwitchComponent.test.d.ts'
rpt2: writing declarations for 'project/packages/data-switch/PickerValidator.ts' to 'project/packages/data-switch/dist/PickerValidator.d.ts'
rpt2: generating target 2
rpt2: rolling caches
rpt2: writing declarations for 'project/packages/data-switch/index.ts' to 'project/packages/data-switch/dist/index.d.ts'
rpt2: writing declarations for 'project/packages/data-switch/DataSwitchComponent.ts' to 'project/packages/data-switch/dist/DataSwitchComponent.d.ts'
rpt2: writing declarations for 'project/packages/data-switch/DataSwitch.ts' to 'project/packages/data-switch/dist/DataSwitch.d.ts'
rpt2: writing declarations for 'project/packages/data-switch/DataSwitchComponent.test.ts' to 'project/packages/data-switch/dist/DataSwitchComponent.test.d.ts'
rpt2: writing declarations for 'project/packages/data-switch/PickerValidator.ts' to 'project/packages/data-switch/dist/PickerValidator.d.ts'
created dist/index.js, dist/index.es.js in 2.2s

[2019-07-24 21:17:54] waiting for changes...

[ezolenko]

Should be fixed in 0.22.1

[ahramadan]

Confirmed Working , Thanks