@aws-cdk/core/lib/private/intrinsic.js

AWS Cloud Development Kit Core Library

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const stack_trace_1 = require("../stack-trace");
const token_1 = require("../token");
/**
 * Token subclass that represents values intrinsic to the target document language
 *
 * WARNING: this class should not be externally exposed, but is currently visible
 * because of a limitation of jsii (https://github.com/aws/jsii/issues/524).
 *
 * This class will disappear in a future release and should not be used.
 *
 * @experimental
 */
class Intrinsic {
    constructor(value) {
        if (isFunction(value)) {
            throw new Error(`Argument to Intrinsic must be a plain value object, got ${value}`);
        }
        this.creationStack = stack_trace_1.captureStackTrace();
        this.value = value;
    }
    resolve(_context) {
        return this.value;
    }
    /**
     * Convert an instance of this Token to a string
     *
     * This method will be called implicitly by language runtimes if the object
     * is embedded into a string. We treat it the same as an explicit
     * stringification.
     */
    toString() {
        return token_1.Token.asString(this);
    }
    /**
     * Turn this Token into JSON
     *
     * Called automatically when JSON.stringify() is called on a Token.
     */
    toJSON() {
        // We can't do the right work here because in case we contain a function, we
        // won't know the type of value that function represents (in the simplest
        // case, string or number), and we can't know that without an
        // IResolveContext to actually do the resolution, which we don't have.
        // We used to throw an error, but since JSON.stringify() is often used in
        // error messages to produce a readable representation of an object, if we
        // throw here we'll obfuscate that descriptive error with something worse.
        // So return a string representation that indicates this thing is a token
        // and needs resolving.
        return `<unresolved-token>`;
    }
    /**
     * Creates a throwable Error object that contains the token creation stack trace.
     * @param message Error message
     */
    newError(message) {
        return new Error(`${message}\nToken created:\n    at ${this.creationStack.join('\n    at ')}\nError thrown:`);
    }
}
exports.Intrinsic = Intrinsic;
function isFunction(x) {
    return typeof x === 'function';
}
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