@polyfill-io-aot/builder/src/executors/GeneratePolyfillCombinations.js

This is the builder module for polyfill-io-aot.

"use strict";
const common_1 = require("@polyfill-io-aot/common");
const md5Hash_1 = require("@polyfill-io-aot/common/src/fns/md5Hash");
const reducePolyfills_1 = require("@polyfill-io-aot/common/src/fns/reducePolyfills");
const Bluebird = require("bluebird");
const Executor_1 = require("../Executor");
const BuildEvent_1 = require("../interfaces/BuildEvent");
const symbols_1 = require("../symbols");
/** @internal */
class GeneratePolyfillCombinations extends Executor_1.Executor {
    execute() {
        this._ora.start('Generating polyfill combinations');
        const outMap = new Map();
        const features = reducePolyfills_1.reducePolyfills(this.conf.polyfills, this.conf.flags || []);
        const hashes = [];
        const uaMap = {};
        this.emit(BuildEvent_1.BuildEvent.GENERATE_COMBO_ALL_BEGIN);
        Bluebird
            .map(this.builder[symbols_1.USERAGENTS], (uaString) => {
            return this.map(uaString, features, hashes, outMap, uaMap);
        })
            .then(() => {
            this.builder[symbols_1.COMBO_HASHES] = hashes;
            this.builder[symbols_1.COMBO_MAP] = outMap;
            this.builder[symbols_1.COMBO_HASH_UA_MAP] = uaMap;
        })
            .then(() => {
            this._ora.succeed('Generated polyfill combinations');
            this.emit(BuildEvent_1.BuildEvent.GENERATE_COMBO_ALL_OK);
        }, (e) => {
            this._ora.fail(`Error generating polyfill combinations: ${this.formatError(e)}`);
            this.onError(e);
        });
    }
    map(uaString, features, hashes, outMap, uaMap) {
        this.emit(BuildEvent_1.BuildEvent.GENERATE_COMBO_UA_BEGIN, uaString);
        const p$ = common_1.getPolyfills({
            excludes: this.conf.excludes,
            features,
            uaString
        });
        return p$
            .then((obj) => {
            const hash = md5Hash_1.md5Object(obj);
            if (!outMap.has(hash)) {
                outMap.set(hash, obj);
                hashes.push(hash);
                uaMap[hash] = uaString;
            }
            this._ora.text = `Generated combinations for ${uaString}`;
            this.emit(BuildEvent_1.BuildEvent.GENERATE_COMBO_UA_OK, uaString);
        })
            .catch((e) => {
            this.emit(BuildEvent_1.BuildEvent.GENERATE_COMBO_UA_ERR, uaString, e);
            throw e;
        });
    }
}
module.exports = GeneratePolyfillCombinations;
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