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57 lines
2.2 KiB
JavaScript
57 lines
2.2 KiB
JavaScript
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/**
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* @fileoverview Provide the function that emits deprecation warnings.
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* @author Toru Nagashima <http://github.com/mysticatea>
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*/
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"use strict";
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//------------------------------------------------------------------------------
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// Requirements
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//------------------------------------------------------------------------------
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const path = require("path");
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const lodash = require("lodash");
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//------------------------------------------------------------------------------
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// Private
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//------------------------------------------------------------------------------
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// Defitions for deprecation warnings.
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const deprecationWarningMessages = {
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ESLINT_LEGACY_ECMAFEATURES:
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"The 'ecmaFeatures' config file property is deprecated and has no effect.",
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ESLINT_PERSONAL_CONFIG_LOAD:
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"'~/.eslintrc.*' config files have been deprecated. " +
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"Please use a config file per project or the '--config' option.",
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ESLINT_PERSONAL_CONFIG_SUPPRESS:
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"'~/.eslintrc.*' config files have been deprecated. " +
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"Please remove it or add 'root:true' to the config files in your " +
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"projects in order to avoid loading '~/.eslintrc.*' accidentally."
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};
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/**
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* Emits a deprecation warning containing a given filepath. A new deprecation warning is emitted
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* for each unique file path, but repeated invocations with the same file path have no effect.
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* No warnings are emitted if the `--no-deprecation` or `--no-warnings` Node runtime flags are active.
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* @param {string} source The name of the configuration source to report the warning for.
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* @param {string} errorCode The warning message to show.
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* @returns {void}
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*/
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const emitDeprecationWarning = lodash.memoize((source, errorCode) => {
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const rel = path.relative(process.cwd(), source);
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const message = deprecationWarningMessages[errorCode];
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process.emitWarning(
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`${message} (found in "${rel}")`,
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"DeprecationWarning",
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errorCode
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);
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}, (...args) => JSON.stringify(args));
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//------------------------------------------------------------------------------
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// Public Interface
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//------------------------------------------------------------------------------
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module.exports = {
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emitDeprecationWarning
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};
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