yaml-types/dist/function.js

Useful JavaScript types for YAML

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.functionTag = void 0;
const util_1 = require("yaml/util");
const options = {
    defaultType: 'BLOCK_LITERAL'
};
/**
 * `!function` A YAML representation of JavaScript functions
 *
 * Stringified as a block literal string, prefixed with the function name.
 *
 * When parsing, a no-op function with matching name and toString() is
 * returned. It is not possible to construct an actual JavaScript function by
 * evaluating YAML, and it is unsafe to attempt.
 */
exports.functionTag = {
    identify: value => typeof value === 'function',
    tag: '!function',
    resolve(str) {
        const src = str.split('\n');
        const n = src.shift();
        const name = n ? JSON.parse(n) : undefined;
        const code = src.join('\n');
        const f = function () { };
        Object.defineProperty(f, 'name', {
            value: name,
            enumerable: false,
            configurable: true
        });
        f.toString = () => code;
        return f;
    },
    options,
    stringify(i, ctx, onComment, onChompKeep) {
        const { type: originalType, value: originalValue } = i;
        const fn = originalValue;
        const value = JSON.stringify(fn.name) + '\n' + fn.toString();
        // better to just always put functions on a new line.
        const type = originalType || options.defaultType;
        return (0, util_1.stringifyString)({ ...i, type, value }, ctx, onComment, onChompKeep);
    }
};
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