from json

from-json

Import

import { fromJson } from '@dev-suite/decorators/from-json'

Category

• parameter

Use Case

Parse JSON string argument into object.

Replaces

• JSON.parse in every endpoint
• Repeated parse error handling

Example 1

Without decorator

class WebhookController {
  ingest(payload: string) {
    const parsed = JSON.parse(payload);
    return this.handler.handle(parsed);
  }
}

With decorator

import { fromJson } from '@dev-suite/decorators/from-json';

class WebhookController {
  ingest(@fromJson() payload: WebhookPayload) {
    return this.handler.handle(payload);
  }
}

Why better

• Centralizes cross-cutting behavior.
• Method/class/property code stays focused on domain logic.

Example 2

Without decorator

class JobController {
  run(configRaw: string) {
    const config = JSON.parse(configRaw);
    return this.jobs.run(config);
  }
}

With decorator

import { fromJson } from '@dev-suite/decorators/from-json';

class JobController {
  run(@fromJson() configRaw: JobConfig) {
    return this.jobs.run(configRaw);
  }
}

Why better

• Second scenario reuses same policy without duplication.
• Behavior is more consistent and easier to audit.