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mapExpression.js
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59 lines (52 loc) · 1.49 KB
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
// @flow
import mapOriginalExpression from "./mapOriginalExpression";
import mapExpressionBindings from "./mapBindings";
import mapTopLevelAwait from "./mapAwaitExpression";
export default function mapExpression(
expression: string,
mappings: {
[string]: string | null
},
bindings: string[],
shouldMapBindings: boolean = true,
shouldMapAwait: boolean = true
): {
expression: string,
mapped: {
await: boolean,
bindings: boolean,
originalExpression: boolean
}
} {
const mapped = {
await: false,
bindings: false,
originalExpression: false
};
try {
if (mappings) {
const beforeOriginalExpression = expression;
expression = mapOriginalExpression(expression, mappings);
mapped.originalExpression = beforeOriginalExpression !== expression;
}
if (shouldMapBindings) {
const beforeBindings = expression;
expression = mapExpressionBindings(expression, bindings);
mapped.bindings = beforeBindings !== expression;
}
if (shouldMapAwait) {
const beforeAwait = expression;
expression = mapTopLevelAwait(expression);
mapped.await = beforeAwait !== expression;
}
} catch (e) {
console.warn(`Error when mapping ${expression} expression:`, e);
}
return {
expression,
mapped
};
}