24854003834

Committed 23 Apr 2026 07:14PM UTC coverage: 82.563% (-1.2%) from 83.75%

Build # 24854003834

Build Type

push

github

Committed by

web-flow

Commit Message

feat: add websocket support for language resolution (#757)

Coverage Stats

435 of 577 branches covered (75.39%)

Branch coverage included in aggregate %.

2 of 12 new or added lines in 4 files covered. (16.67%)

976 of 1132 relevant lines covered (86.22%)

139.72 hits per line

Source File
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68.42

/src/resolvers/header.resolver.ts

import { I18nResolver } from '../index';
import { Injectable, ExecutionContext, Logger } from '@nestjs/common';
import { I18nResolverOptions } from '../decorators';

@Injectable()
export class HeaderResolver implements I18nResolver {
  private logger = new Logger('I18nService');
  constructor(
    @I18nResolverOptions()
    private keys: string[] = [],
  ) {}

  resolve(context: ExecutionContext): Promise<string | string[] | undefined> {
    let req: any;

    switch (context.getType() as string) {
      case 'http':
        req = context.switchToHttp().getRequest();
        break;
      case 'ws': {
        const client: any = context.switchToWs().getClient();
        req = client?.handshake ?? client?.upgradeReq ?? client?.request ?? client;
        break;
      }
      case 'graphql':
        [, , { req }] = context.getArgs();
        break;
    }

    let lang = undefined;

    if (req) {
      for (const key of this.keys) {
        if (key === 'accept-language') {
          this.logger.warn(
            'HeaderResolver does not support RFC4647 Accept-Language header. Please use AcceptLanguageResolver instead.',
          );
        }
        if (req.headers !== undefined && req.headers[key] !== undefined) {
          lang = req.headers[key];
          break;
        }
      }
    }

    return lang;
  }
}

1	import { I18nResolver } from '../index';
2	import { Injectable, ExecutionContext, Logger } from '@nestjs/common';	29✔
3	import { I18nResolverOptions } from '../decorators';	29✔
4
5	@Injectable()
6	export class HeaderResolver implements I18nResolver {	29✔
7	private logger = new Logger('I18nService');	16✔
8	constructor(
9	@I18nResolverOptions()
10	private keys: string[] = [],	16!
11	) {}
12
13	resolve(context: ExecutionContext): Promise<string \| string[] \| undefined> {
14	let req: any;
15
16	switch (context.getType() as string) {	328!
17	case 'http':
18	req = context.switchToHttp().getRequest();	310✔
19	break;	310✔
20	case 'ws': {
NEW 21	const client: any = context.switchToWs().getClient();	×
NEW 22	req = client?.handshake ?? client?.upgradeReq ?? client?.request ?? client;	×
NEW 23	break;	×
24	}
25	case 'graphql':
26	[, , { req }] = context.getArgs();	18✔
27	break;	18✔
28	}
29
30	let lang = undefined;	328✔
31
32	if (req) {	328!
33	for (const key of this.keys) {	328✔
34	if (key === 'accept-language') {	328!
35	this.logger.warn(	×
36	'HeaderResolver does not support RFC4647 Accept-Language header. Please use AcceptLanguageResolver instead.',
37	);
38	}
39	if (req.headers !== undefined && req.headers[key] !== undefined) {	328✔
40	lang = req.headers[key];	165✔
41	break;	165✔
42	}
43	}
44	}
45
46	return lang;	328✔
47	}
48	}

toonvanstrijp / nestjs-i18n / 24854003834

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