messageformat/lib/resolve/function-context.js

Intl.MessageFormat / Unicode MessageFormat 2 parser, runtime and polyfill

import { MessageResolutionError } from "../errors.js";
import { getValueSource, resolveValue } from "./resolve-value.js";
export class MessageFunctionContext {
    #ctx;
    #litKeys;
    dir;
    id;
    source;
    constructor(ctx, source, options) {
        this.#ctx = ctx;
        this.dir = undefined;
        const dirOpt = options?.get('u:dir');
        if (dirOpt) {
            const dir = String(resolveValue(ctx, dirOpt));
            if (dir === 'ltr' || dir === 'rtl' || dir === 'auto') {
                this.dir = dir;
            }
            else if (dir !== 'inherit') {
                const msg = 'Unsupported value for u:dir option';
                const optSource = getValueSource(dirOpt);
                ctx.onError(new MessageResolutionError('bad-option', msg, optSource));
            }
        }
        const idOpt = options?.get('u:id');
        this.id = idOpt ? String(resolveValue(ctx, idOpt)) : undefined;
        if (options) {
            this.#litKeys = new Set();
            for (const [key, value] of options) {
                if (value.type === 'literal')
                    this.#litKeys.add(key);
            }
        }
        this.source = source;
    }
    get literalOptionKeys() {
        return new Set(this.#litKeys);
    }
    get localeMatcher() {
        return this.#ctx.localeMatcher;
    }
    get locales() {
        return this.#ctx.locales.map(String);
    }
    get onError() {
        return this.#ctx.onError;
    }
}