/
resolve-config.js
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/
resolve-config.js
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"use strict";
const thirdParty = require("../common/third-party");
const minimatch = require("minimatch");
const path = require("path");
const mem = require("mem");
const resolveEditorConfig = require("./resolve-config-editorconfig");
const loadToml = require("../utils/load-toml");
const resolve = require("../common/resolve");
const getExplorerMemoized = mem(
(opts) => {
const cosmiconfig = thirdParty["cosmiconfig" + (opts.sync ? "Sync" : "")];
const explorer = cosmiconfig("prettier", {
cache: opts.cache,
transform: (result) => {
if (result && result.config) {
if (typeof result.config === "string") {
const dir = path.dirname(result.filepath);
const modulePath = resolve(result.config, { paths: [dir] });
result.config = eval("require")(modulePath);
}
if (typeof result.config !== "object") {
throw new Error(
"Config is only allowed to be an object, " +
`but received ${typeof result.config} in "${result.filepath}"`
);
}
delete result.config.$schema;
}
return result;
},
searchPlaces: [
"package.json",
".prettierrc",
".prettierrc.json",
".prettierrc.yaml",
".prettierrc.yml",
".prettierrc.js",
"prettier.config.js",
".prettierrc.toml",
],
loaders: {
".toml": loadToml,
},
});
return explorer;
},
{ cacheKey: JSON.stringify }
);
/** @param {{ cache: boolean, sync: boolean }} opts */
function getExplorer(opts) {
// Normalize opts before passing to a memoized function
opts = { sync: false, cache: false, ...opts };
return getExplorerMemoized(opts);
}
function _resolveConfig(filePath, opts, sync) {
opts = { useCache: true, ...opts };
const loadOpts = {
cache: !!opts.useCache,
sync: !!sync,
editorconfig: !!opts.editorconfig,
};
const { load, search } = getExplorer(loadOpts);
const loadEditorConfig = resolveEditorConfig.getLoadFunction(loadOpts);
const arr = [
opts.config ? load(opts.config) : search(filePath),
loadEditorConfig(filePath),
];
const unwrapAndMerge = ([result, editorConfigured]) => {
const merged = {
...editorConfigured,
...mergeOverrides(result, filePath),
};
["plugins", "pluginSearchDirs"].forEach((optionName) => {
if (Array.isArray(merged[optionName])) {
merged[optionName] = merged[optionName].map((value) =>
typeof value === "string" && value.startsWith(".") // relative path
? path.resolve(path.dirname(result.filepath), value)
: value
);
}
});
if (!result && !editorConfigured) {
return null;
}
return merged;
};
if (loadOpts.sync) {
return unwrapAndMerge(arr);
}
return Promise.all(arr).then(unwrapAndMerge);
}
const resolveConfig = (filePath, opts) => _resolveConfig(filePath, opts, false);
resolveConfig.sync = (filePath, opts) => _resolveConfig(filePath, opts, true);
function clearCache() {
mem.clear(getExplorerMemoized);
resolveEditorConfig.clearCache();
}
async function resolveConfigFile(filePath) {
const { search } = getExplorer({ sync: false });
const result = await search(filePath);
return result ? result.filepath : null;
}
resolveConfigFile.sync = (filePath) => {
const { search } = getExplorer({ sync: true });
const result = search(filePath);
return result ? result.filepath : null;
};
function mergeOverrides(configResult, filePath) {
const { config, filepath: configPath } = configResult || {};
const { overrides, ...options } = config || {};
if (filePath && overrides) {
const relativeFilePath = path.relative(path.dirname(configPath), filePath);
for (const override of overrides) {
if (
pathMatchesGlobs(
relativeFilePath,
override.files,
override.excludeFiles
)
) {
Object.assign(options, override.options);
}
}
}
return options;
}
// Based on eslint: https://github.com/eslint/eslint/blob/master/lib/config/config-ops.js
function pathMatchesGlobs(filePath, patterns, excludedPatterns) {
const patternList = [].concat(patterns);
const excludedPatternList = [].concat(excludedPatterns || []);
const opts = { matchBase: true, dot: true };
return (
patternList.some((pattern) => minimatch(filePath, pattern, opts)) &&
!excludedPatternList.some((excludedPattern) =>
minimatch(filePath, excludedPattern, opts)
)
);
}
module.exports = {
resolveConfig,
resolveConfigFile,
clearCache,
};