250 lines
6.3 KiB
JavaScript
250 lines
6.3 KiB
JavaScript
/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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const Source = require("./Source");
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const { SourceNode, SourceMapConsumer } = require("source-map");
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const { SourceListMap, fromStringWithSourceMap } = require("source-list-map");
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const { getSourceAndMap, getMap } = require("./helpers");
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const applySourceMap = require("./applySourceMap");
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class SourceMapSource extends Source {
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constructor(
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value,
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name,
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sourceMap,
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originalSource,
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innerSourceMap,
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removeOriginalSource
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) {
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super();
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const valueIsBuffer = Buffer.isBuffer(value);
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this._valueAsString = valueIsBuffer ? undefined : value;
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this._valueAsBuffer = valueIsBuffer ? value : undefined;
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this._name = name;
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this._hasSourceMap = !!sourceMap;
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const sourceMapIsBuffer = Buffer.isBuffer(sourceMap);
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const sourceMapIsString = typeof sourceMap === "string";
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this._sourceMapAsObject =
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sourceMapIsBuffer || sourceMapIsString ? undefined : sourceMap;
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this._sourceMapAsString = sourceMapIsString ? sourceMap : undefined;
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this._sourceMapAsBuffer = sourceMapIsBuffer ? sourceMap : undefined;
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this._hasOriginalSource = !!originalSource;
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const originalSourceIsBuffer = Buffer.isBuffer(originalSource);
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this._originalSourceAsString = originalSourceIsBuffer
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? undefined
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: originalSource;
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this._originalSourceAsBuffer = originalSourceIsBuffer
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? originalSource
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: undefined;
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this._hasInnerSourceMap = !!innerSourceMap;
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const innerSourceMapIsBuffer = Buffer.isBuffer(innerSourceMap);
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const innerSourceMapIsString = typeof innerSourceMap === "string";
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this._innerSourceMapAsObject =
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innerSourceMapIsBuffer || innerSourceMapIsString
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? undefined
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: innerSourceMap;
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this._innerSourceMapAsString = innerSourceMapIsString
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? innerSourceMap
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: undefined;
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this._innerSourceMapAsBuffer = innerSourceMapIsBuffer
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? innerSourceMap
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: undefined;
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this._removeOriginalSource = removeOriginalSource;
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}
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_ensureValueBuffer() {
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if (this._valueAsBuffer === undefined) {
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this._valueAsBuffer = Buffer.from(this._valueAsString, "utf-8");
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}
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}
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_ensureValueString() {
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if (this._valueAsString === undefined) {
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this._valueAsString = this._valueAsBuffer.toString("utf-8");
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}
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}
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_ensureOriginalSourceBuffer() {
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if (this._originalSourceAsBuffer === undefined && this._hasOriginalSource) {
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this._originalSourceAsBuffer = Buffer.from(
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this._originalSourceAsString,
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"utf-8"
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);
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}
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}
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_ensureOriginalSourceString() {
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if (this._originalSourceAsString === undefined && this._hasOriginalSource) {
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this._originalSourceAsString = this._originalSourceAsBuffer.toString(
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"utf-8"
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);
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}
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}
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_ensureInnerSourceMapObject() {
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if (this._innerSourceMapAsObject === undefined && this._hasInnerSourceMap) {
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this._ensureInnerSourceMapString();
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this._innerSourceMapAsObject = JSON.parse(this._innerSourceMapAsString);
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}
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}
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_ensureInnerSourceMapBuffer() {
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if (this._innerSourceMapAsBuffer === undefined && this._hasInnerSourceMap) {
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this._ensureInnerSourceMapString();
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this._innerSourceMapAsBuffer = Buffer.from(
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this._innerSourceMapAsString,
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"utf-8"
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);
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}
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}
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_ensureInnerSourceMapString() {
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if (this._innerSourceMapAsString === undefined && this._hasInnerSourceMap) {
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if (this._innerSourceMapAsBuffer !== undefined) {
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this._innerSourceMapAsString = this._innerSourceMapAsBuffer.toString(
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"utf-8"
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);
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} else {
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this._innerSourceMapAsString = JSON.stringify(
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this._innerSourceMapAsObject
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);
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}
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}
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}
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_ensureSourceMapObject() {
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if (this._sourceMapAsObject === undefined) {
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this._ensureSourceMapString();
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this._sourceMapAsObject = JSON.parse(this._sourceMapAsString);
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}
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}
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_ensureSourceMapBuffer() {
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if (this._sourceMapAsBuffer === undefined) {
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this._ensureSourceMapString();
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this._sourceMapAsBuffer = Buffer.from(this._sourceMapAsString, "utf-8");
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}
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}
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_ensureSourceMapString() {
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if (this._sourceMapAsString === undefined) {
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if (this._sourceMapAsBuffer !== undefined) {
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this._sourceMapAsString = this._sourceMapAsBuffer.toString("utf-8");
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} else {
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this._sourceMapAsString = JSON.stringify(this._sourceMapAsObject);
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}
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}
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}
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getArgsAsBuffers() {
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this._ensureValueBuffer();
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this._ensureSourceMapBuffer();
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this._ensureOriginalSourceBuffer();
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this._ensureInnerSourceMapBuffer();
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return [
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this._valueAsBuffer,
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this._name,
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this._sourceMapAsBuffer,
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this._originalSourceAsBuffer,
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this._innerSourceMapAsBuffer,
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this._removeOriginalSource
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];
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}
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source() {
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this._ensureValueString();
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return this._valueAsString;
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}
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map(options) {
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if (!this._hasInnerSourceMap) {
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this._ensureSourceMapObject();
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return this._sourceMapAsObject;
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}
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return getMap(this, options);
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}
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sourceAndMap(options) {
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if (!this._hasInnerSourceMap) {
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this._ensureValueString();
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this._ensureSourceMapObject();
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return {
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source: this._valueAsString,
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map: this._sourceMapAsObject
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};
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}
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return getSourceAndMap(this, options);
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}
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node(options) {
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this._ensureValueString();
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this._ensureSourceMapObject();
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this._ensureOriginalSourceString();
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let node = SourceNode.fromStringWithSourceMap(
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this._valueAsString,
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new SourceMapConsumer(this._sourceMapAsObject)
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);
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node.setSourceContent(this._name, this._originalSourceAsString);
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if (this._hasInnerSourceMap) {
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this._ensureInnerSourceMapObject();
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node = applySourceMap(
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node,
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new SourceMapConsumer(this._innerSourceMapAsObject),
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this._name,
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this._removeOriginalSource
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);
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}
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return node;
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}
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listMap(options) {
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this._ensureValueString();
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this._ensureSourceMapObject();
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options = options || {};
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if (options.module === false)
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return new SourceListMap(
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this._valueAsString,
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this._name,
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this._valueAsString
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);
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return fromStringWithSourceMap(
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this._valueAsString,
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this._sourceMapAsObject
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);
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}
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updateHash(hash) {
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this._ensureValueBuffer();
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this._ensureSourceMapBuffer();
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this._ensureOriginalSourceBuffer();
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this._ensureInnerSourceMapBuffer();
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hash.update("SourceMapSource");
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hash.update(this._valueAsBuffer);
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hash.update(this._sourceMapAsBuffer);
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if (this._hasOriginalSource) {
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hash.update(this._originalSourceAsBuffer);
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}
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if (this._hasInnerSourceMap) {
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hash.update(this._innerSourceMapAsBuffer);
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}
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hash.update(this._removeOriginalSource ? "true" : "false");
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}
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}
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module.exports = SourceMapSource;
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