webpack TS2304 Cannot find name 'Map', 'Set', 'Promise'
TypescriptWebpackTypescript Problem Overview
I have the following webpack.config.js
var path = require("path");
var webpack = require('webpack');
module.exports = {
entry: {
'ng2-auto-complete': path.join(__dirname, 'src', 'index.ts')
},
resolve: {
extensions: ['', '.ts', '.js', '.json', '.css', '.html']
},
output: {
path: path.join(__dirname, 'dist'),
filename: "[name].umd.js",
library: ["[name]"],
libraryTarget: "umd"
},
externals: [
/^rxjs\//, //.... any other way? rx.umd.min.js does work?
/^@angular\//
],
devtool: 'source-map',
module: {
loaders: [
{ // Support for .ts files.
test: /\.ts$/,
loaders: ['ts', 'angular2-template-loader'],
exclude: [/test/, /node_modules\/(?!(ng2-.+))/]
}
]
}
};
and the following tsconfig.json
{
"compilerOptions": {
"target": "es5",
"module": "commonjs",
"moduleResolution": "node",
"noEmitHelpers": false,
"emitDecoratorMetadata": true,
"experimentalDecorators": true,
"sourceMap": true,
"pretty": true,
"allowUnreachableCode": true,
"allowUnusedLabels": true,
"noImplicitAny": false,
"noImplicitReturns": false,
"noImplicitUseStrict": false,
"noFallthroughCasesInSwitch": false,
"allowSyntheticDefaultImports": true,
"suppressExcessPropertyErrors": true,
"suppressImplicitAnyIndexErrors": true,
"outDir": "dist",
"baseUrl": "src"
},
"files": [
"src/index.ts"
],
"exclude": [
"node_modules"
],
"compileOnSave": false,
"buildOnSave": false
}
When I run tsc
command as the following, it all works fine.
ng2-auto-complete (master)$ tsc --declaration
ng2-auto-complete (master)$
When I run webpack
command, it shows typescript compile errors.
ng2-auto-complete (master)$ webpack
ts-loader: Using typescript@2.0.0 and /Users/allen/github/ng2-auto-complete/tsconfig.json
Hash: bd6c50e4b9732c3ffa9d
Version: webpack 1.13.2
Time: 5041ms
Asset Size Chunks Chunk Names
ng2-auto-complete.umd.js 24.4 kB 0 [emitted] ng2-auto-complete
ng2-auto-complete.umd.js.map 28.4 kB 0 [emitted] ng2-auto-complete
+ 11 hidden modules
ERROR in /Users/allen/github/ng2-auto-complete/node_modules/@angular/platform-browser/src/dom/dom_renderer.d.ts
(18,37): error TS2304: Cannot find name 'Map'.
ERROR in /Users/allen/github/ng2-auto-complete/node_modules/@angular/platform-browser/src/dom/dom_adapter.d.ts
(96,42): error TS2304: Cannot find name 'Map'.
ERROR in /Users/allen/github/ng2-auto-complete/node_modules/@angular/platform-browser/src/web_workers/worker/location_providers.d.ts
(21,86): error TS2304: Cannot find name 'Promise'.
...
ng2-auto-complete (master)$
I don't know what I am missing for webpack and typescript compilation.
node_modules
has been excluded in tsconfig.json
"exclude": [ "node_modules" ],
and type definitions are there in node_modules
"devDependencies": {
"@types/core-js": "^0.9.32",
"@types/node": "^6.0.31"
I also tried to use typings.json
and typings directory without success.
{
"globalDependencies": {
"core-js": "registry:dt/core-js#0.0.0+20160725163759",
"jasmine": "registry:dt/jasmine#2.2.0+20160621224255",
"node": "registry:dt/node#6.0.0+20160815222444"
}
}
FYI, versions
$ node --version
v5.7.1
$ npm --version
3.6.0
$ tsc --version
Version 2.0.0
How do I get rid of TS2304 errors with webpack
command?
Typescript Solutions
Solution 1 - Typescript
I added this to work in tsconfig.json
, and it seems working without any error.
"compilerOptions": {
"target": "es5",
"lib": ["es5", "es6", "dom"], <--- this
...
}
I am not sure lib
are for Typescript 2.0 function or not, but found out there are several libraries are available
From the typescript config schema (note the es2015.collection)
"lib": {
"description": "Specify library file to be included in the compilation. Requires TypeScript version 2.0 or later.",
"type": "array",
"items": {
"type": "string",
"enum": [ "es5", "es6", "es2015", "es7", "es2016", "es2017", "dom", "webworker", "scripthost", "es2015.core", "es2015.collection", "es2015.generator", "es2015.iterable",
"es2015.promise", "es2015.proxy", "es2015.reflect", "es2015.symbol", "es2015.symbol.wellknown", "es2016.array.include", "es2017.object", "es2017.sharedmemory" ]
}
}
This solves the compile errors, but I still wonder why tsc
command works without any errors, but webpack
does not. tsc
searches for all possible libraries without using lib
by tsconfig.json
?
Solution 2 - Typescript
Map
, Set
and Promise
are ES6
features.
In your tsconfig.json
you are using:
"target": "es5"
This causes the compiler to use the normal es5
lib.d.ts, which lacks the definitions for the above types.
You want to use the lib.es6.d.ts:
"target": "es6"
Solution 3 - Typescript
Just add:
"lib": ["es6"] // means at least ES6
Don't change target.
Target is used to tell Typescript into which version of ECMAScript to compile your .ts
files. Of course, you can change it, if the browser your application will be running in, will support that version of ECMAScript.
For example, I use "target": "es5"
and "lib": ["es6"]
.
Another reason could be:
That your .ts
file is not under "rootDir": "./YourFolder",
Solution 4 - Typescript
If you are wondering why none of these fixes work for you keep in mind -- if you specify the file to compile on the command line or package.json tsc will NOT read your tsconfig.json file and therefore have no effect. Instead specify the "files" and "outDir" in your tsconfig.json and one of the "lib" fixes will probably work for you. Then compile with only:
tsc --sourcemaps
Solution 5 - Typescript
tsc index.ts --lib "es6"
If adding lib not working in tsconfig.json, using above command line option
Solution 6 - Typescript
I had to install the core-js typings from npm to solve the issue
npm install @types/core-js
explanation:
The goal of @types npm packages is to obtain type definitions with npm. Using these type definitions is a TypeScript 2.0 feature .
@types replace current tools such as typings and tsd, though these will continue to be supported for some time.
Solution 7 - Typescript
https://stackoverflow.com/a/44800490/9690407
npm install typings -g
typings install
is deprecated in npm 5.6.0!
Instead use the npm install @types/core-js
syntax.
Solution 8 - Typescript
Since the answer directly to the OP has been answered already, I figured I would add what fixed it for me. My situation was slightly different in that I was not using WebPack and was getting these errors when trying to use tsc. The answer everyone else is giving (add "es6" to lib) did not resolve it for me. The problem for me was that I had v9.11.1 of node installed on my machine, but I had used npm to grab "@types/node", which got the most recent, v10+. Once I uninstalled that node typing and installed a specific v9 node typing file, this issue was resolved.
Solution 9 - Typescript
I'm using node.js v10.16.3.
The problem for me was that the typescript compiler was ignoring my tsconfig.json
file.
Three solutions worked for me:
- Install ts-node and use that instead to compile and run the file
- Do
tsc filename.ts --lib "es6", "dom"
when you compile the file - Install
@types/node
which will allow you to runtsc filename.ts
without errors.
Solution 10 - Typescript
To resolve this error change the following properties in tsconfig.json file.
"lib": [
"es2018",
"dom",
"es5",
"es6"
],
"module": "es2015",
"target": "es6"
After that run following command in the terminal.
npm install @types/es6-shim
ERROR RESOLVED.
Solution 11 - Typescript
In your tsconfig.json just change "target": "es5" to "target": "es6"
Solution 12 - Typescript
To solve this you only need to import map method in your ts file like this:
import { map } from 'rxjs/operators';
Solution 13 - Typescript
for es6 use this
tsc filename.ts --lib es2015
Solution 14 - Typescript
For me the solution was to install @types/node
:
yarn add @types/node --dev
Or if you prefer npm:
npm install @types/node --dev
However, I suppose that if you plan to continue using "Map", "Set" or "Promise", it's good practice to include "es6" in the "lib" array in tsconfig.json
anyways.
Solution 15 - Typescript
In my case I had to run:
npm install typings -g
typings install
That solved my problem.