svelte-ast-print/dist/_internal/option.js

Serialize Svelte AST nodes into stringified syntax. A.k.a parse in reverse.

/**
 * @internal
 * Gives us a better control on transforming passed options.
 */
export class Options {
    static DEFAULT_INDENT = "tab";
    static DEFAULT_ORDER = /** @type {const} */ [
        "options",
        "module",
        "instance",
        "fragment",
        "css",
    ];
    static INDENT = new Map(
    /** @type {const} */ [
        ["tab", "\t"],
        ["2-space", "  "],
        ["4-space", "    "],
    ]);
    /**
     * _(before transformation)_ - for better DX
     */
    #raw;
    /**
     * @param raw provided options by user - before transformation
     */
    constructor(raw) {
        this.#raw = raw;
    }
    get indent() {
        const { format } = this.#raw;
        const transformed = Options.INDENT.get(format?.indent ?? Options.DEFAULT_INDENT);
        if (!transformed) {
            throw new Error(`Unrecognized indent name - ${format?.indent}, allowed are: ${[...Options.INDENT.keys()]}`);
        }
        return transformed;
    }
    get order() {
        const { root } = this.#raw;
        return root?.order ?? Options.DEFAULT_ORDER;
    }
}
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