@pristine-ts/data-mapping-common

Framework-agnostic core for @pristine-ts/data-mapping. No DI container, no logging dependency — usable directly in Angular / browser bundles.

What's here

• DataMapper — autoMap, map, mapAll
• AutoDataMappingBuilder — schema inference from @property / @array decorators (with a WeakMap cache)
• DataMappingBuilder — fluent schema construction (field, nested, arrayOfObjects, arrayOfScalars)
• Built-in normalizers: StringNormalizer, NumberNormalizer, BooleanNormalizer, DateNormalizer, LowercaseNormalizer
• ConsoleErrorReporter — default error sink that writes to console.error

Standalone usage

npm install @pristine-ts/data-mapping-common class-transformer

import {
  DataMapper, AutoDataMappingBuilder,
  StringNormalizer, NumberNormalizer, BooleanNormalizer, DateNormalizer, LowercaseNormalizer,
} from "@pristine-ts/data-mapping-common";

const dataMapper = new DataMapper(
  new AutoDataMappingBuilder(),
  [new StringNormalizer(), new NumberNormalizer(), new BooleanNormalizer(), new DateNormalizer(), new LowercaseNormalizer()],
  [],
);

const user = await dataMapper.autoMap(payload, User);

Errors go to console.error by default. Pass a custom DataMapperErrorReporter to the constructor to redirect them.

Backend / DI usage

If you're inside a Pristine app, import @pristine-ts/data-mapping instead — it wires DataMapper into the DI container, registers the built-in normalizers, and routes errors through LogHandlerInterface. See @pristine-ts/data-mapping for the full API reference — everything documented there is also exported from this package.