pg-boss/dist/adapters/placeholders.js

Queueing jobs in Postgres from Node.js like a boss

/**
 * Parses a SQL string with PostgreSQL-style `$N` placeholders into the
 * literal segments between placeholders and the values in textual order.
 *
 * Handles repeated indexes (e.g. `$2` appearing twice) by duplicating the
 * value at each occurrence, so adapters that target positional `?`-style
 * binders or tagged-template SQL builders stay consistent with what
 * postgres would have produced from the original `$N` form.
 */
export function parsePlaceholders(text, values) {
    const parts = [];
    const reordered = [];
    // Local /g regex: stateful via lastIndex but never shared across calls.
    const re = /\$(\d+)/g;
    let lastIndex = 0;
    let match;
    while ((match = re.exec(text)) !== null) {
        parts.push(text.slice(lastIndex, match.index));
        reordered.push(values?.[Number(match[1]) - 1]);
        lastIndex = re.lastIndex;
    }
    parts.push(text.slice(lastIndex));
    return { parts, reordered };
}