How to use the unicode-trie function in unicode-trie

import DefaultShaper from './DefaultShaper';
import StateMachine from 'dfa';
import UnicodeTrie from 'unicode-trie';
import GlyphInfo from '../GlyphInfo';
import useData from './use.json';

const {categories, decompositions} = useData;
const trie = new UnicodeTrie(require('fs').readFileSync(__dirname + '/use.trie'));
const stateMachine = new StateMachine(useData);

/**
 * This shaper is an implementation of the Universal Shaping Engine, which
 * uses Unicode data to shape a number of scripts without a dedicated shaping engine.
 * See https://www.microsoft.com/typography/OpenTypeDev/USE/intro.htm.
 */
export default class UniversalShaper extends DefaultShaper {
  static zeroMarkWidths = 'BEFORE_GPOS';
  static planFeatures(plan) {
    plan.addStage(setupSyllables);

    // Default glyph pre-processing group
    plan.addStage(['locl', 'ccmp', 'nukt', 'akhn']);

    // Reordering group

import unicode from 'unicode-properties';
import * as Script from '../../layout/Script';
import GlyphInfo from '../GlyphInfo';
import indicMachine from './indic.json';
import useData from './use.json';
import {
  CATEGORIES,
  POSITIONS,
  CONSONANT_FLAGS,
  JOINER_FLAGS,
  HALANT_OR_COENG_FLAGS, INDIC_CONFIGS,
  INDIC_DECOMPOSITIONS
} from './indic-data';

const {decompositions} = useData;
const trie = new UnicodeTrie(require('fs').readFileSync(__dirname + '/indic.trie'));
const stateMachine = new StateMachine(indicMachine);

/**
 * The IndicShaper supports indic scripts e.g. Devanagari, Kannada, etc.
 * Based on code from Harfbuzz: https://github.com/behdad/harfbuzz/blob/master/src/hb-ot-shape-complex-indic.cc
 */
export default class IndicShaper extends DefaultShaper {
  static zeroMarkWidths = 'NONE';
  static planFeatures(plan) {
    plan.addStage(setupSyllables);

    plan.addStage(['locl', 'ccmp']);

    plan.addStage(initialReordering);

    plan.addStage('nukt');

import fs from 'fs';
import UnicodeTrie from 'unicode-trie';
import data from './data.json';
import buildUnicodeProperties from './index';

const trie = new UnicodeTrie(fs.readFileSync(__dirname + '/data.trie'));
const unicodeProperties = buildUnicodeProperties(data, trie);

export default unicodeProperties;

import UnicodeTrie from 'unicode-trie';
import base64 from 'base64-js';
import data from './data.json';
import trieData from './trie.json';
import buildUnicodeProperties from './index';

const trie = new UnicodeTrie(base64.toByteArray(trieData.data));
const unicodeProperties = buildUnicodeProperties(data, trie);

export default unicodeProperties;

import DefaultShaper from './DefaultShaper';
import unicode from 'unicode-properties';
import UnicodeTrie from 'unicode-trie';

const trie = new UnicodeTrie(require('fs').readFileSync(__dirname + '/data.trie'));
const FEATURES = ['isol', 'fina', 'fin2', 'fin3', 'medi', 'med2', 'init'];

const ShapingClasses = {
  Non_Joining: 0,
  Left_Joining: 1,
  Right_Joining: 2,
  Dual_Joining: 3,
  Join_Causing: 3,
  ALAPH: 4,
  'DALATH RISH': 5,
  Transparent: 6
};

const ISOL = 'isol';
const FINA = 'fina';
const FIN2 = 'fin2';