Natural way of importing json files from TypeScript:

Have a data/data1.json file in the same folder as your .ts sources and just load it:

import {data1} from './data/data1'
console.log(data1.persons[0].name) // no problems with types - data1 is well described by a typescript interface :)

Problem to solve: As a TypeScript developer I want to import the data inside a .json local file naturally from my TypeScript code. Also I want to make sure it get's embedded in the output (so I can bundle its content)

embed-json-in-js is a JSON pre-processing tool that convert .json files into real TypeScript modules for easy importing and embedding.

Install and Use in Command Line

Install:

npm install embed-json-in-ts

Use:

npx embed-json-in-ts --input="src/**/*.json"
npx embed-json-in-ts --mode fs2json --input "./data/**/*.json" --output "src/data" --debug
npx embed-json-in-ts --mode string --input "node_modules/typescript/lib/*.d.ts" --output "./src/typings" --preserveExtension

Install and use in node js project

npm install --save-dev embed-json-in-ts

Use it in your build scripts gulpfile.js or whatever your build system:

var tool = require('embed-json-in-ts')
tool({input: 'src/**/*.json'})

Integrating in existing TypeScript projects

Basically you want to call embed-json-in-ts before the typescript compiler tsc for example in package.json:

"scripts": {
  "build": "node node_modules/embed-json-in-ts/src/cli --input src/**/data/**/*.json && node node_modules/typescript/bin/tsc",

folder to json tool

it will generate a .json file containing a folder contents and then generate the .ts from that:

embed-json-in-ts --mode=fs2json --input="folder/**/*" --output="./data/folder.json"

and then you are ready to:

import {folder} from './data/folder'

Project example:

*see spec/assets/project-watch-handlebars-test1

• gulp watch, handlebars templates imported using json. in this case template compilation into a json is not responsibility of this project - just the support for importing and embedding.

TODO

• get input from given tsconfig.json file (current one - since this is a ts project should have one)