vite-plugin-public-path/dist/utils/replacer.js

Vite's equivalent of `__webpack_public_path__` in Webpack. Works for `index.html` and modern/legacy build.

"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
    __setModuleDefault(result, mod);
    return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.replaceStringWithExpression = exports.PlaceholderReplacer = void 0;
const swc = __importStar(require("@swc/core"));
const Visitor_1 = require("@swc/core/Visitor");
class PlaceholderReplacer extends Visitor_1.Visitor {
    constructor(placeholder, expression) {
        super();
        this.placeholder = placeholder;
        this.expression = PlaceholderReplacer.parseExpression(expression);
    }
    static parseExpression(expression) {
        return swc.parseSync(expression).body[0].expression;
    }
    // @ts-ignore We changed expression type
    visitStringLiteral(node) {
        const stringParts = node.value.split(this.placeholder);
        if (stringParts.length === 1)
            return node;
        const createStringExpression = (str) => ({
            type: "StringLiteral",
            span: { start: 0, end: 0, ctxt: 0 },
            value: str,
            hasEscape: true
        });
        let subExpressions = Array(stringParts.length * 2 - 1);
        for (let i = 0; i < stringParts.length; i++) {
            subExpressions[i * 2] = createStringExpression(stringParts[i]);
            if (i !== stringParts.length - 1) {
                subExpressions[i * 2 + 1] = this.expression;
            }
        }
        subExpressions = subExpressions.filter(expr => expr.type !== "StringLiteral" || expr.value !== "");
        if (subExpressions.length === 1)
            return subExpressions[0];
        const createAddExpression = (left) => ({
            type: "BinaryExpression",
            span: { start: 0, end: 0, ctxt: 0 },
            operator: "+",
            left: left,
            right: null
        });
        let rootExpression;
        let previousExpression;
        for (let i = 0; i < subExpressions.length; i++) {
            const currentSubExpression = subExpressions[i];
            if (i === 0) {
                previousExpression = rootExpression = createAddExpression(currentSubExpression);
            }
            else if (i === subExpressions.length - 1) {
                previousExpression.right = currentSubExpression;
            }
            else {
                previousExpression.right = createAddExpression(currentSubExpression);
                previousExpression = previousExpression.right;
            }
        }
        return rootExpression;
    }
}
exports.PlaceholderReplacer = PlaceholderReplacer;
async function replaceStringWithExpression(code, placeholder, expression, minify) {
    const ast = await swc.parse(code);
    const replacer = new PlaceholderReplacer(placeholder, expression);
    replacer.visitModule(ast);
    return (await swc.print(ast, { minify })).code;
}
exports.replaceStringWithExpression = replaceStringWithExpression;