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@dizmo/functions-tree2json

v1.1.14

Published

Tree to JSON mapper

Downloads

22

Readme

NPM version Build Status Coverage Status

@dizmo/functions-tree2json

Provides two functions tree2array and tree2object, where:

  • tree2array: maps a hierarchical tree recursively to an array via the get (returning the value for a node) and see (returning the sub-nodes for a node) callback functions, until the tree is completely mapped (or see returning an empty list [] for the node).

The array is a recursive description of a tree, where the value of a given node is at index 0 of the array followed optionally by other arrays, each containing the name followed by a sub-tree for any given sub-nodes. Each sub-tree is again yet another array according to the same recursive description.

  • tree2object: maps a hierarchical tree recursively to a JSON-like object via te get (returning the value for a node) and see (returning the sub-nodes for a node) callback functions, until the tree is completely mapped (or see returning an empty list [] for the node).

The object conforms to the same rules like any regular JSON or JavaScript object, with the addition that the values of nodes can be directly represented using an underscore _ for the key value.

Usage

Install

npm install @dizmo/functions-tree2json --save

Require

const { tree2array, tree2object } = require('@dizmo/functions-tree2json');

Examples

import { tree2array, tree2object } from '@dizmo/functions-tree2json';
declare const db: {
    // db should return value for given path (or root)
    get: (path: string | null) => any;
    // db should return nodes for given path (or root)
    see: (path: string | null) => string[];
};
const root_array
    = tree2array(null, db.get, db.see);
const node_array
    = tree2array('path/to/node', db.get, db.see);
const root_object
    = tree2object(null, db.get, db.see);
const node_object
    = tree2object('path/to/node', db.get, db.see);

Development

Clean

npm run clean

Build

npm run build

without linting and cleaning:

npm run -- build --no-lint --no-clean

with UMD bundling (incl. minimization):

npm run -- build --prepack

with UMD bundling (excl. minimization):

npm run -- build --prepack --no-minify

Lint

npm run lint

with auto-fixing:

npm run -- lint --fix

Test

npm run test

without linting, cleaning and (re-)building:

npm run -- test --no-lint --no-clean --no-build

Cover

npm run cover

without linting, cleaning and (re-)building:

npm run -- cover --no-lint --no-clean --no-build

Documentation

npm run docs

Publish

npm publish

initially (if public):

npm publish --access=public

Copyright

© 2020 dizmo AG, Switzerland