/
preProcessPattern.js
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/
preProcessPattern.js
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import path from 'path';
import isGlob from 'is-glob';
import globParent from 'glob-parent';
import normalize from './utils/normalize';
import isTemplateLike from './utils/isTemplateLike';
import isObject from './utils/isObject';
import { stat } from './utils/promisify';
/* eslint-disable no-param-reassign */
export default function preProcessPattern(globalRef, pattern) {
const {
logger,
context,
inputFileSystem,
fileDependencies,
contextDependencies,
compilation,
} = globalRef;
pattern =
typeof pattern === 'string'
? {
from: pattern,
}
: Object.assign({}, pattern);
if (pattern.from === '') {
const message = 'path "from" cannot be empty string';
logger.error(message);
compilation.errors.push(new Error(message));
}
pattern.to = pattern.to || '';
pattern.context = pattern.context || context;
if (!path.isAbsolute(pattern.context)) {
pattern.context = path.join(context, pattern.context);
}
const isFromGlobPatten = isObject(pattern.from) && pattern.from.glob;
// Todo remove this in next major
const isToDirectory =
path.extname(pattern.to) === '' || pattern.to.slice(-1) === path.sep;
// Normalize paths
pattern.from = isFromGlobPatten ? pattern.from : path.normalize(pattern.from);
pattern.context = path.normalize(pattern.context);
pattern.to = path.normalize(pattern.to);
pattern.ignore = globalRef.ignore.concat(pattern.ignore || []);
logger.debug(`processing from: '${pattern.from}' to: '${pattern.to}'`);
switch (true) {
// if toType already exists
case !!pattern.toType:
break;
case isTemplateLike(pattern.to):
pattern.toType = 'template';
break;
case isToDirectory:
pattern.toType = 'dir';
break;
default:
pattern.toType = 'file';
}
// If we know it's a glob, then bail early
if (isFromGlobPatten) {
logger.debug(`determined '${pattern.absoluteFrom}' is a glob`);
pattern.fromType = 'glob';
const globOptions = Object.assign({}, pattern.from);
delete globOptions.glob;
pattern.glob = normalize(pattern.context, pattern.from.glob);
pattern.globOptions = globOptions;
pattern.absoluteFrom = path.resolve(pattern.context, pattern.from.glob);
return Promise.resolve(pattern);
}
if (path.isAbsolute(pattern.from)) {
pattern.absoluteFrom = pattern.from;
} else {
pattern.absoluteFrom = path.resolve(pattern.context, pattern.from);
}
logger.debug(
`determined '${pattern.from}' to be read from '${pattern.absoluteFrom}'`
);
const noStatsHandler = () => {
// If from doesn't appear to be a glob, then log a warning
if (isGlob(pattern.from) || pattern.from.indexOf('*') !== -1) {
logger.debug(`determined '${pattern.absoluteFrom}' is a glob`);
pattern.fromType = 'glob';
pattern.glob = normalize(pattern.context, pattern.from);
// We need to add context directory as dependencies to avoid problems when new files added in directories
// when we already in watch mode and this directories are not in context dependencies
// `glob-parent` always return `/` we need normalize path
contextDependencies.add(path.normalize(globParent(pattern.absoluteFrom)));
} else {
const newWarning = new Error(
`unable to locate '${pattern.from}' at '${pattern.absoluteFrom}'`
);
const hasWarning = compilation.warnings.some(
// eslint-disable-next-line no-shadow
(warning) => warning.message === newWarning.message
);
// Only display the same message once
if (!hasWarning) {
logger.warn(newWarning.message);
compilation.warnings.push(newWarning);
}
pattern.fromType = 'nonexistent';
}
};
logger.debug(
`getting stats for '${pattern.absoluteFrom}' to determinate 'fromType'`
);
return stat(inputFileSystem, pattern.absoluteFrom)
.catch(() => noStatsHandler())
.then((stats) => {
if (!stats) {
noStatsHandler();
return pattern;
}
if (stats.isDirectory()) {
logger.debug(`determined '${pattern.absoluteFrom}' is a directory`);
contextDependencies.add(pattern.absoluteFrom);
pattern.fromType = 'dir';
pattern.context = pattern.absoluteFrom;
pattern.glob = normalize(pattern.absoluteFrom, '**/*');
pattern.absoluteFrom = path.join(pattern.absoluteFrom, '**/*');
pattern.globOptions = {
dot: true,
};
} else if (stats.isFile()) {
logger.debug(`determined '${pattern.absoluteFrom}' is a file`);
fileDependencies.add(pattern.absoluteFrom);
pattern.fromType = 'file';
pattern.context = path.dirname(pattern.absoluteFrom);
pattern.glob = normalize(pattern.absoluteFrom);
pattern.globOptions = {
dot: true,
};
} else if (!pattern.fromType) {
logger.warn(`unrecognized file type for ${pattern.from}`);
}
return pattern;
});
}