File name
Commit message
Commit date
File name
Commit message
Commit date
File name
Commit message
Commit date
File name
Commit message
Commit date
File name
Commit message
Commit date
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = populatePlaceholders;
var _t = require("@babel/types");
const {
blockStatement,
cloneNode,
emptyStatement,
expressionStatement,
identifier,
isStatement,
isStringLiteral,
stringLiteral,
validate
} = _t;
function populatePlaceholders(metadata, replacements) {
const ast = cloneNode(metadata.ast);
if (replacements) {
metadata.placeholders.forEach(placeholder => {
if (!Object.prototype.hasOwnProperty.call(replacements, placeholder.name)) {
const placeholderName = placeholder.name;
throw new Error(`Error: No substitution given for "${placeholderName}". If this is not meant to be a
placeholder you may want to consider passing one of the following options to @babel/template:
- { placeholderPattern: false, placeholderWhitelist: new Set(['${placeholderName}'])}
- { placeholderPattern: /^${placeholderName}$/ }`);
}
});
Object.keys(replacements).forEach(key => {
if (!metadata.placeholderNames.has(key)) {
throw new Error(`Unknown substitution "${key}" given`);
}
});
}
metadata.placeholders.slice().reverse().forEach(placeholder => {
try {
applyReplacement(placeholder, ast, replacements && replacements[placeholder.name] || null);
} catch (e) {
e.message = `@babel/template placeholder "${placeholder.name}": ${e.message}`;
throw e;
}
});
return ast;
}
function applyReplacement(placeholder, ast, replacement) {
if (placeholder.isDuplicate) {
if (Array.isArray(replacement)) {
replacement = replacement.map(node => cloneNode(node));
} else if (typeof replacement === "object") {
replacement = cloneNode(replacement);
}
}
const {
parent,
key,
index
} = placeholder.resolve(ast);
if (placeholder.type === "string") {
if (typeof replacement === "string") {
replacement = stringLiteral(replacement);
}
if (!replacement || !isStringLiteral(replacement)) {
throw new Error("Expected string substitution");
}
} else if (placeholder.type === "statement") {
if (index === undefined) {
if (!replacement) {
replacement = emptyStatement();
} else if (Array.isArray(replacement)) {
replacement = blockStatement(replacement);
} else if (typeof replacement === "string") {
replacement = expressionStatement(identifier(replacement));
} else if (!isStatement(replacement)) {
replacement = expressionStatement(replacement);
}
} else {
if (replacement && !Array.isArray(replacement)) {
if (typeof replacement === "string") {
replacement = identifier(replacement);
}
if (!isStatement(replacement)) {
replacement = expressionStatement(replacement);
}
}
}
} else if (placeholder.type === "param") {
if (typeof replacement === "string") {
replacement = identifier(replacement);
}
if (index === undefined) throw new Error("Assertion failure.");
} else {
if (typeof replacement === "string") {
replacement = identifier(replacement);
}
if (Array.isArray(replacement)) {
throw new Error("Cannot replace single expression with an array.");
}
}
if (index === undefined) {
validate(parent, key, replacement);
parent[key] = replacement;
} else {
const items = parent[key].slice();
if (placeholder.type === "statement" || placeholder.type === "param") {
if (replacement == null) {
items.splice(index, 1);
} else if (Array.isArray(replacement)) {
items.splice(index, 1, ...replacement);
} else {
items[index] = replacement;
}
} else {
items[index] = replacement;
}
validate(parent, key, items);
parent[key] = items;
}
}