Link a YAML file with interfaces in JavaScript

Question

Link a YAML file with interfaces in JavaScript

I'm currently learning JavaScript and need to convert a YAML file to an Interface in JavaScript. Here is an example of the YAML file:

- provider_name: SEA-AD
  consortiumn_name: SEA-AD
  defaults: thumbnail
  Donors:
  - id: "https://portal.brain-map.org/explore/seattle-alzheimers-disease#Human-MTG-10x_SEA-AD_Male_TissueBlock"
    label: Registered 2/20/2023, Rebecca Hodge, SEA-AD
    description: "4 x 4 x 5 millimeter, 0.11 millimeter"
    link: "https://portal.brain-map.org/explore/seattle-alzheimers-disease"
    sex: Male
    Blocks: 
    - id: https://portal.brain-map.org/explore/seattle-alzheimers-disease#Human-MTG-10x_SEA-AD_Male_TissueBlock
      label: Registered 2/20/2023, Rebecca Hodge, SEA-AD

And here is the TypeScript interface:

export interface Provider {
    provider_name: string;
    provider_uuid: string;
    consortium_name: string;
    defaults: string;
    donors: Donor[]
}

export interface Donor {
    id: string;
    label: string;
    description: string;
    link: string;
    age: number;
    sex: string;
    bmi: number;
    blocks: Block[];
}

export interface Block {
    id: string;
    label: string;
}

Currently, I am struggling with mapping the inner variables like the "Donors" in the YAML file using JavaScript. Here is what I have tried so far:

cosnt data = load("YAML File");  
const provider = {
    provider_name: data.provider_name,
    consortium_name : data.consortium_name,
    dafaults: data.defaults,
    donors: data.Donors.map(function (donor) {

As someone new to JavaScript, I would appreciate any guidance on whether I am approaching this correctly or if there is a different method I should be using. The map function seems to be causing issues, as it is not available in JavaScript. Any suggestions or references would be highly valued. Thank you!

javascript node.js typescript yaml

Answer 1

Answer №1

If you're looking to convert your yaml file into a JavaScript object, one option is to utilize libraries such as js-yaml. You can install it using the command: npm install js-yaml -g. To merge objects in this way:

var file1 = 'input1.yml',
    file2 = 'input2.yml',
    yaml = require('js-yaml'),
    fs = require('fs'),
    obj1 = yaml.load(fs.readFileSync(file1, {encoding: 'utf-8'}));
    obj2 = yaml.load(fs.readFileSync(file2, {encoding: 'utf-8'}));
    obj = { ...obj1, ...obj2 };

Keep in mind that these objects are already in JSON format.

Although this example isn't in TypeScript, it demonstrates the overall strategy.

Answer 2

If you're looking to convert your yaml file into a JavaScript object, one option is to utilize libraries such as js-yaml. You can install it using the command: npm install js-yaml -g. To merge objects in this way:

var file1 = 'input1.yml',
    file2 = 'input2.yml',
    yaml = require('js-yaml'),
    fs = require('fs'),
    obj1 = yaml.load(fs.readFileSync(file1, {encoding: 'utf-8'}));
    obj2 = yaml.load(fs.readFileSync(file2, {encoding: 'utf-8'}));
    obj = { ...obj1, ...obj2 };

Keep in mind that these objects are already in JSON format.

Although this example isn't in TypeScript, it demonstrates the overall strategy.

Answer 3

Answer №2

To ensure that the loaded YAML is in the correct JSON format, you can utilize a tool like AJV for validation and data casting:

import Ajv, { JSONSchemaType } from "ajv"
const ajv = new Ajv()

interface Provider {
  provider_name: string;
}

const schema: JSONSchemaType<Provider> = {
  type: "object",
  properties: {
    provider_name: {type: "string"}
  },
  required: ["provider_name"]
}

const validate = ajv.compile(schema)

// Assuming YAML is parsed into a JSON Object
const data = load('file.yaml')

if (validate(data)) {
  // 'data' represents Provider at this point
  console.log(data.foo)
} else {
  console.log(validate.errors)
}

If preferred, you can simply cast it directly like so:

const data = load("YAML File") as Provider;

Answer 4

To ensure that the loaded YAML is in the correct JSON format, you can utilize a tool like AJV for validation and data casting:

import Ajv, { JSONSchemaType } from "ajv"
const ajv = new Ajv()

interface Provider {
  provider_name: string;
}

const schema: JSONSchemaType<Provider> = {
  type: "object",
  properties: {
    provider_name: {type: "string"}
  },
  required: ["provider_name"]
}

const validate = ajv.compile(schema)

// Assuming YAML is parsed into a JSON Object
const data = load('file.yaml')

if (validate(data)) {
  // 'data' represents Provider at this point
  console.log(data.foo)
} else {
  console.log(validate.errors)
}

If preferred, you can simply cast it directly like so:

const data = load("YAML File") as Provider;

Link a YAML file with interfaces in JavaScript

Answer №1

Answer №2

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